16961397 has 4 divisors (see below), whose sum is σ = 22615200. Its totient is φ = 11307596.

The previous prime is 16961389. The next prime is 16961411. The reversal of 16961397 is 79316961.

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 16961397 - 2³ = 16961389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16960397) 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, 2826897 + ... + 2826902.

It is an arithmetic number, because the mean of its divisors is an integer number (5653800).

Almost surely, 2^16961397 is an apocalyptic number.

It is an amenable number.

16961397 is a deficient number, since it is larger than the sum of its proper divisors (5653803).

16961397 is an equidigital number, since it uses as much as digits as its factorization.

16961397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5653802.

The product of its digits is 61236, while the sum is 42.

The square root of 16961397 is about 4118.4216636959. The cubic root of 16961397 is about 256.9333857137.

The spelling of 16961397 in words is "sixteen million, nine hundred sixty-one thousand, three hundred ninety-seven".