139608970 has 8 divisors (see below), whose sum is σ = 251296164. Its totient is φ = 55843584.

The previous prime is 139608907. The next prime is 139608971. The reversal of 139608970 is 79806931.

It can be written as a sum of positive squares in 2 ways, for example, as 139546969 + 62001 = 11813^2 + 249^2 .

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

It is not an unprimeable number, because it can be changed into a prime (139608971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6980439 + ... + 6980458.

Almost surely, 2^139608970 is an apocalyptic number.

139608970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139608970 is a deficient number, since it is larger than the sum of its proper divisors (111687194).

139608970 is a wasteful number, since it uses less digits than its factorization.

139608970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13960904.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 139608970 is about 11815.6239784448. The cubic root of 139608970 is about 518.7655258333.

The spelling of 139608970 in words is "one hundred thirty-nine million, six hundred eight thousand, nine hundred seventy".