3133978399 has 4 divisors (see below), whose sum is σ = 3180754264. Its totient is φ = 3087202536.

The previous prime is 3133978391. The next prime is 3133978429. The reversal of 3133978399 is 9938793313.

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 3133978399 - 2³ = 3133978391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3133978391) 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, 23387832 + ... + 23387965.

It is an arithmetic number, because the mean of its divisors is an integer number (795188566).

Almost surely, 2^3133978399 is an apocalyptic number.

3133978399 is a deficient number, since it is larger than the sum of its proper divisors (46775865).

3133978399 is an equidigital number, since it uses as much as digits as its factorization.

3133978399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46775864.

The product of its digits is 3306744, while the sum is 55.

The square root of 3133978399 is about 55981.9470811797. The cubic root of 3133978399 is about 1463.4076902053.

The spelling of 3133978399 in words is "three billion, one hundred thirty-three million, nine hundred seventy-eight thousand, three hundred ninety-nine".