139674859 has 4 divisors (see below), whose sum is σ = 141114904. Its totient is φ = 138234816.

The previous prime is 139674841. The next prime is 139674881. The reversal of 139674859 is 958476931.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139674859 - 2⁹ = 139674347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139674559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719877 + ... + 720070.

It is an arithmetic number, because the mean of its divisors is an integer number (35278726).

Almost surely, 2^139674859 is an apocalyptic number.

139674859 is a deficient number, since it is larger than the sum of its proper divisors (1440045).

139674859 is an equidigital number, since it uses as much as digits as its factorization.

139674859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1440044.

The product of its digits is 1632960, while the sum is 52.

The square root of 139674859 is about 11818.4118645442. The cubic root of 139674859 is about 518.8471241381.

The spelling of 139674859 in words is "one hundred thirty-nine million, six hundred seventy-four thousand, eight hundred fifty-nine".