16444957 has 4 divisors (see below), whose sum is σ = 16554016. Its totient is φ = 16335900.

The previous prime is 16444919. The next prime is 16444993. The reversal of 16444957 is 75944461.

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: 75944461 = 37 ⋅2052553.

It is a cyclic number.

It is not a de Polignac number, because 16444957 - 2⁷ = 16444829 is a prime.

It is a super-2 number, since 2×16444957² = 540873221463698, which 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 (16442957) 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, 54303 + ... + 54604.

It is an arithmetic number, because the mean of its divisors is an integer number (4138504).

Almost surely, 2^16444957 is an apocalyptic number.

It is an amenable number.

16444957 is a deficient number, since it is larger than the sum of its proper divisors (109059).

16444957 is a wasteful number, since it uses less digits than its factorization.

16444957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109058.

The product of its digits is 120960, while the sum is 40.

The square root of 16444957 is about 4055.2382174171. The cubic root of 16444957 is about 254.2987628794.

The spelling of 16444957 in words is "sixteen million, four hundred forty-four thousand, nine hundred fifty-seven".