9790499621 has 4 divisors (see below), whose sum is σ = 11189142432. Its totient is φ = 8391856812.

The previous prime is 9790499617. The next prime is 9790499623. The reversal of 9790499621 is 1269940979.

9790499621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1269940979 = 167 ⋅7604437.

It is a cyclic number.

It is not a de Polignac number, because 9790499621 - 2² = 9790499617 is a prime.

It is a super-2 number, since 2×9790499621² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9790499623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699321395 + ... + 699321408.

It is an arithmetic number, because the mean of its divisors is an integer number (2797285608).

Almost surely, 2^9790499621 is an apocalyptic number.

It is an amenable number.

9790499621 is a deficient number, since it is larger than the sum of its proper divisors (1398642811).

9790499621 is a wasteful number, since it uses less digits than its factorization.

9790499621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398642810.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 9790499621 is about 98946.9535710928. The cubic root of 9790499621 is about 2139.2832214571.

The spelling of 9790499621 in words is "nine billion, seven hundred ninety million, four hundred ninety-nine thousand, six hundred twenty-one".