2990057391 has 6 divisors (see below), whose sum is σ = 4318971800. Its totient is φ = 1993371588.

The previous prime is 2990057377. The next prime is 2990057407. The reversal of 2990057391 is 1937500992.

It is a happy number.

It is not a de Polignac number, because 2990057391 - 2⁷ = 2990057263 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 (2990057591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166114291 + ... + 166114308.

Almost surely, 2^2990057391 is an apocalyptic number.

2990057391 is a deficient number, since it is larger than the sum of its proper divisors (1328914409).

2990057391 is a wasteful number, since it uses less digits than its factorization.

2990057391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332228605 (or 332228602 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 2990057391 is about 54681.4172365713. The cubic root of 2990057391 is about 1440.6545042657.

The spelling of 2990057391 in words is "two billion, nine hundred ninety million, fifty-seven thousand, three hundred ninety-one".