139418470 has 32 divisors (see below), whose sum is σ = 265098240. Its totient is φ = 52708320.

The previous prime is 139418467. The next prime is 139418507. The reversal of 139418470 is 74814931.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8101 + ... + 18559.

It is an arithmetic number, because the mean of its divisors is an integer number (8284320).

Almost surely, 2^139418470 is an apocalyptic number.

139418470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139418470 is a deficient number, since it is larger than the sum of its proper divisors (125679770).

139418470 is a wasteful number, since it uses less digits than its factorization.

139418470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10540.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 139418470 is about 11807.5598664584. The cubic root of 139418470 is about 518.5294621657.

It can be divided in two parts, 139 and 418470, that added together give a square (418609 = 647²).

The spelling of 139418470 in words is "one hundred thirty-nine million, four hundred eighteen thousand, four hundred seventy".