8139461397 has 16 divisors (see below), whose sum is σ = 10906159488. Its totient is φ = 5399596800.

The previous prime is 8139461389. The next prime is 8139461441. The reversal of 8139461397 is 7931649318.

It is not a de Polignac number, because 8139461397 - 2³ = 8139461389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139461377) 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, 557128 + ... + 571550.

It is an arithmetic number, because the mean of its divisors is an integer number (681634968).

Almost surely, 2^8139461397 is an apocalyptic number.

It is an amenable number.

8139461397 is a deficient number, since it is larger than the sum of its proper divisors (2766698091).

8139461397 is a wasteful number, since it uses less digits than its factorization.

8139461397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340.

The product of its digits is 979776, while the sum is 51.

The square root of 8139461397 is about 90218.9636218462. The cubic root of 8139461397 is about 2011.5548967012.

The spelling of 8139461397 in words is "eight billion, one hundred thirty-nine million, four hundred sixty-one thousand, three hundred ninety-seven".