139538934890 has 32 divisors (see below), whose sum is σ = 263709233280. Its totient is φ = 53086549824.

The previous prime is 139538934877. The next prime is 139538934901. The reversal of 139538934890 is 98439835931.

It is a happy number.

It is a super-2 number, since 2×139538934890² (a number of 23 digits) contains 22 as substring.

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, 3571382 + ... + 3610241.

It is an arithmetic number, because the mean of its divisors is an integer number (8240913540).

Almost surely, 2^139538934890 is an apocalyptic number.

139538934890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139538934890 is a deficient number, since it is larger than the sum of its proper divisors (124170298390).

139538934890 is a wasteful number, since it uses less digits than its factorization.

139538934890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7181726.

The product of its (nonzero) digits is 25194240, while the sum is 62.

The spelling of 139538934890 in words is "one hundred thirty-nine billion, five hundred thirty-eight million, nine hundred thirty-four thousand, eight hundred ninety".