139495090 has 32 divisors (see below), whose sum is σ = 288645120. Its totient is φ = 47546304.

The previous prime is 139495067. The next prime is 139495091. The reversal of 139495090 is 90594931.

It is not an unprimeable number, because it can be changed into a prime (139495091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6351 + ... + 17869.

It is an arithmetic number, because the mean of its divisors is an integer number (9020160).

Almost surely, 2^139495090 is an apocalyptic number.

139495090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139495090 is an abundant number, since it is smaller than the sum of its proper divisors (149150030).

139495090 is a wasteful number, since it uses less digits than its factorization.

139495090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11706.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 139495090 is about 11810.8039523142. The cubic root of 139495090 is about 518.6244339236.

The spelling of 139495090 in words is "one hundred thirty-nine million, four hundred ninety-five thousand, ninety".