3940296491 has 4 divisors (see below), whose sum is σ = 3940436400. Its totient is φ = 3940156584.

The previous prime is 3940296487. The next prime is 3940296511. The reversal of 3940296491 is 1946920493.

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 3940296491 - 2² = 3940296487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3940296401) 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, 11336 + ... + 89493.

It is an arithmetic number, because the mean of its divisors is an integer number (985109100).

Almost surely, 2^3940296491 is an apocalyptic number.

3940296491 is a deficient number, since it is larger than the sum of its proper divisors (139909).

3940296491 is a wasteful number, since it uses less digits than its factorization.

3940296491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139908.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 3940296491 is about 62771.7810086666. The cubic root of 3940296491 is about 1579.4636446570.

The spelling of 3940296491 in words is "three billion, nine hundred forty million, two hundred ninety-six thousand, four hundred ninety-one".