964942521 has 4 divisors (see below), whose sum is σ = 1286590032. Its totient is φ = 643295012.

The previous prime is 964942513. The next prime is 964942523. The reversal of 964942521 is 125249469.

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.

It is a cyclic number.

It is not a de Polignac number, because 964942521 - 2³ = 964942513 is a prime.

It is a super-2 number, since 2×964942521² = 1862228137667670882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (964942523) 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, 160823751 + ... + 160823756.

It is an arithmetic number, because the mean of its divisors is an integer number (321647508).

Almost surely, 2^964942521 is an apocalyptic number.

It is an amenable number.

964942521 is a deficient number, since it is larger than the sum of its proper divisors (321647511).

964942521 is a wasteful number, since it uses less digits than its factorization.

964942521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321647510.

The product of its digits is 155520, while the sum is 42.

The square root of 964942521 is about 31063.5239630020. The cubic root of 964942521 is about 988.1748916603.

The spelling of 964942521 in words is "nine hundred sixty-four million, nine hundred forty-two thousand, five hundred twenty-one".