139464859 has 2 divisors, whose sum is σ = 139464860. Its totient is φ = 139464858.

The previous prime is 139464851. The next prime is 139464863. The reversal of 139464859 is 958464931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139464859 - 2³ = 139464851 is a prime.

It is not a weakly prime, because it can be changed into another prime (139464851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69732429 + 69732430.

It is an arithmetic number, because the mean of its divisors is an integer number (69732430).

Almost surely, 2^139464859 is an apocalyptic number.

139464859 is a deficient number, since it is larger than the sum of its proper divisors (1).

139464859 is an equidigital number, since it uses as much as digits as its factorization.

139464859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 139464859 is about 11809.5240801651. The cubic root of 139464859 is about 518.5869662536.

The spelling of 139464859 in words is "one hundred thirty-nine million, four hundred sixty-four thousand, eight hundred fifty-nine".