16964431 has 4 divisors (see below), whose sum is σ = 18506664. Its totient is φ = 15422200.

The previous prime is 16964393. The next prime is 16964443. The reversal of 16964431 is 13446961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16964431 - 2⁷ = 16964303 is a prime.

It is a super-2 number, since 2×16964431² = 575583838307522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16964491) by changing a digit.

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, 771100 + ... + 771121.

It is an arithmetic number, because the mean of its divisors is an integer number (4626666).

Almost surely, 2^16964431 is an apocalyptic number.

16964431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16964431 is a deficient number, since it is larger than the sum of its proper divisors (1542233).

16964431 is a wasteful number, since it uses less digits than its factorization.

16964431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542232.

The product of its digits is 15552, while the sum is 34.

The square root of 16964431 is about 4118.7899922186. The cubic root of 16964431 is about 256.9487046055.

The spelling of 16964431 in words is "sixteen million, nine hundred sixty-four thousand, four hundred thirty-one".