139914628 has 24 divisors (see below), whose sum is σ = 281074752. Its totient is φ = 59696544.

The previous prime is 139914587. The next prime is 139914631. The reversal of 139914628 is 826419931.

It is a happy number.

It is a super-2 number, since 2×139914628² = 39152206256756768, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4651 + ... + 17362.

It is an arithmetic number, because the mean of its divisors is an integer number (11711448).

Almost surely, 2^139914628 is an apocalyptic number.

It is an amenable number.

139914628 is an abundant number, since it is smaller than the sum of its proper divisors (141160124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139914628 is a wasteful number, since it uses less digits than its factorization.

139914628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22251 (or 22249 counting only the distinct ones).

The product of its digits is 93312, while the sum is 43.

The square root of 139914628 is about 11828.5513905972. The cubic root of 139914628 is about 519.1438426271.

The spelling of 139914628 in words is "one hundred thirty-nine million, nine hundred fourteen thousand, six hundred twenty-eight".