139029479 has 8 divisors (see below), whose sum is σ = 147168000. Its totient is φ = 130973112.

The previous prime is 139029439. The next prime is 139029491. The reversal of 139029479 is 974920931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139029479 - 2⁸ = 139029223 is a prime.

It is a super-2 number, since 2×139029479² = 38658392062022882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139029439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17039 + ... + 23840.

It is an arithmetic number, because the mean of its divisors is an integer number (18396000).

Almost surely, 2^139029479 is an apocalyptic number.

139029479 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

139029479 is a deficient number, since it is larger than the sum of its proper divisors (8138521).

139029479 is a wasteful number, since it uses less digits than its factorization.

139029479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41077.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 139029479 is about 11791.0762443468. The cubic root of 139029479 is about 518.0467638645.

The spelling of 139029479 in words is "one hundred thirty-nine million, twenty-nine thousand, four hundred seventy-nine".