9979449490 has 8 divisors (see below), whose sum is σ = 17963009100. Its totient is φ = 3991779792.

The previous prime is 9979449443. The next prime is 9979449509. The reversal of 9979449490 is 949449799.

It can be written as a sum of positive squares in 2 ways, for example, as 9159829849 + 819619641 = 95707^2 + 28629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×9979449490² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498972465 + ... + 498972484.

Almost surely, 2^9979449490 is an apocalyptic number.

9979449490 is a deficient number, since it is larger than the sum of its proper divisors (7983559610).

9979449490 is a wasteful number, since it uses less digits than its factorization.

9979449490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997944956.

The product of its (nonzero) digits is 26453952, while the sum is 64.

The square root of 9979449490 is about 99897.1946052541. The cubic root of 9979449490 is about 2152.9578535232.

The spelling of 9979449490 in words is "nine billion, nine hundred seventy-nine million, four hundred forty-nine thousand, four hundred ninety".