6460972139 has 2 divisors, whose sum is σ = 6460972140. Its totient is φ = 6460972138.

The previous prime is 6460972117. The next prime is 6460972151. The reversal of 6460972139 is 9312790646.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6460972139 - 2³² = 2166004843 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 6460972093 and 6460972102.

It is not a weakly prime, because it can be changed into another prime (6460972109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3230486069 + 3230486070.

It is an arithmetic number, because the mean of its divisors is an integer number (3230486070).

Almost surely, 2^6460972139 is an apocalyptic number.

6460972139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6460972139 is an equidigital number, since it uses as much as digits as its factorization.

6460972139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 6460972139 is about 80380.1725489564. The cubic root of 6460972139 is about 1862.5129000743.

The spelling of 6460972139 in words is "six billion, four hundred sixty million, nine hundred seventy-two thousand, one hundred thirty-nine".