336979991 has 4 divisors (see below), whose sum is σ = 354715800. Its totient is φ = 319244184.

The previous prime is 336979961. The next prime is 336979999. The reversal of 336979991 is 199979633.

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 336979991 - 2¹⁸ = 336717847 is a prime.

It is a super-2 number, since 2×336979991² = 227111028668720162, 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 (336979999) 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, 8867876 + ... + 8867913.

It is an arithmetic number, because the mean of its divisors is an integer number (88678950).

Almost surely, 2^336979991 is an apocalyptic number.

336979991 is a deficient number, since it is larger than the sum of its proper divisors (17735809).

336979991 is a wasteful number, since it uses less digits than its factorization.

336979991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17735808.

The product of its digits is 2480058, while the sum is 56.

The square root of 336979991 is about 18357.0147627549. The cubic root of 336979991 is about 695.8805607955.

The spelling of 336979991 in words is "three hundred thirty-six million, nine hundred seventy-nine thousand, nine hundred ninety-one".