913164421 has 4 divisors (see below), whose sum is σ = 983407852. Its totient is φ = 842920992.

The previous prime is 913164419. The next prime is 913164437. The reversal of 913164421 is 124461319.

913164421 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.

It can be written as a sum of positive squares in 2 ways, for example, as 328008321 + 585156100 = 18111^2 + 24190^2 .

It is a cyclic number.

It is not a de Polignac number, because 913164421 - 2¹ = 913164419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (913164481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35121696 + ... + 35121721.

It is an arithmetic number, because the mean of its divisors is an integer number (245851963).

Almost surely, 2^913164421 is an apocalyptic number.

It is an amenable number.

913164421 is a deficient number, since it is larger than the sum of its proper divisors (70243431).

913164421 is a wasteful number, since it uses less digits than its factorization.

913164421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70243430.

The product of its digits is 5184, while the sum is 31.

The square root of 913164421 is about 30218.6105074340. The cubic root of 913164421 is about 970.1740648407.

The spelling of 913164421 in words is "nine hundred thirteen million, one hundred sixty-four thousand, four hundred twenty-one".