3904742391 has 8 divisors (see below), whose sum is σ = 5679625344. Its totient is φ = 2366510520.

The previous prime is 3904742339. The next prime is 3904742441. The reversal of 3904742391 is 1932474093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3904742391 - 2⁷ = 3904742263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3904742311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59162731 + ... + 59162796.

It is an arithmetic number, because the mean of its divisors is an integer number (709953168).

Almost surely, 2^3904742391 is an apocalyptic number.

3904742391 is a deficient number, since it is larger than the sum of its proper divisors (1774882953).

3904742391 is a wasteful number, since it uses less digits than its factorization.

3904742391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118325541.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 3904742391 is about 62487.9379640583. The cubic root of 3904742391 is about 1574.6986763439.

The spelling of 3904742391 in words is "three billion, nine hundred four million, seven hundred forty-two thousand, three hundred ninety-one".