139268470 has 16 divisors (see below), whose sum is σ = 273472848. Its totient is φ = 50643040.

The previous prime is 139268453. The next prime is 139268509. The reversal of 139268470 is 74862931.

It is a super-2 number, since 2×139268470² = 38791413472281800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632929 + ... + 633148.

It is an arithmetic number, because the mean of its divisors is an integer number (17092053).

Almost surely, 2^139268470 is an apocalyptic number.

139268470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139268470 is a deficient number, since it is larger than the sum of its proper divisors (134204378).

139268470 is a wasteful number, since it uses less digits than its factorization.

139268470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266095.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 139268470 is about 11801.2062942735. The cubic root of 139268470 is about 518.3434338960.

The spelling of 139268470 in words is "one hundred thirty-nine million, two hundred sixty-eight thousand, four hundred seventy".