6407930391 has 16 divisors (see below), whose sum is σ = 8907566976. Its totient is φ = 4093873056.

The previous prime is 6407930383. The next prime is 6407930407. The reversal of 6407930391 is 1930397046.

It is not a de Polignac number, because 6407930391 - 2³ = 6407930383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6407930381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461785 + ... + 475458.

It is an arithmetic number, because the mean of its divisors is an integer number (556722936).

Almost surely, 2^6407930391 is an apocalyptic number.

6407930391 is a deficient number, since it is larger than the sum of its proper divisors (2499636585).

6407930391 is a wasteful number, since it uses less digits than its factorization.

6407930391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937342.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 6407930391 is about 80049.5495989828. The cubic root of 6407930391 is about 1857.4020838802.

The spelling of 6407930391 in words is "six billion, four hundred seven million, nine hundred thirty thousand, three hundred ninety-one".