16976294399 has 4 divisors (see below), whose sum is σ = 17134951464. Its totient is φ = 16817637336.

The previous prime is 16976294393. The next prime is 16976294407. The reversal of 16976294399 is 99349267961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99349267961 = 70793 ⋅1403377.

It is a cyclic number.

It is not a de Polignac number, because 16976294399 - 2⁸ = 16976294143 is a prime.

It is a super-4 number, since 4×16976294399⁴ (a number of 42 digits) contains 4444 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 (16976294393) 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, 79328372 + ... + 79328585.

It is an arithmetic number, because the mean of its divisors is an integer number (4283737866).

Almost surely, 2^16976294399 is an apocalyptic number.

16976294399 is a deficient number, since it is larger than the sum of its proper divisors (158657065).

16976294399 is a wasteful number, since it uses less digits than its factorization.

16976294399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158657064.

The product of its digits is 39680928, while the sum is 65.

The spelling of 16976294399 in words is "sixteen billion, nine hundred seventy-six million, two hundred ninety-four thousand, three hundred ninety-nine".