139490799 has 24 divisors (see below), whose sum is σ = 227744640. Its totient is φ = 75512304.

The previous prime is 139490779. The next prime is 139490801. The reversal of 139490799 is 997094931.

It is not a de Polignac number, because 139490799 - 2⁸ = 139490543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139490719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22179 + ... + 27764.

It is an arithmetic number, because the mean of its divisors is an integer number (9489360).

Almost surely, 2^139490799 is an apocalyptic number.

139490799 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

139490799 is a deficient number, since it is larger than the sum of its proper divisors (88253841).

139490799 is a wasteful number, since it uses less digits than its factorization.

139490799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49979 (or 49972 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 51.

The square root of 139490799 is about 11810.6222952053. The cubic root of 139490799 is about 518.6191160775.

The spelling of 139490799 in words is "one hundred thirty-nine million, four hundred ninety thousand, seven hundred ninety-nine".