139277690 has 16 divisors (see below), whose sum is σ = 252088200. Its totient is φ = 55402560.

The previous prime is 139277689. The next prime is 139277729. The reversal of 139277690 is 96772931.

It is a happy number.

139277690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 79941481 + 59336209 = 8941^2 + 7703^2 .

It is a super-2 number, since 2×139277690² = 38796549863472200, which contains 22 as substring.

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, 36665 + ... + 40284.

Almost surely, 2^139277690 is an apocalyptic number.

139277690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139277690 is a deficient number, since it is larger than the sum of its proper divisors (112810510).

139277690 is a wasteful number, since it uses less digits than its factorization.

139277690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77137.

The product of its (nonzero) digits is 142884, while the sum is 44.

The square root of 139277690 is about 11801.5969258402. The cubic root of 139277690 is about 518.3548722854.

The spelling of 139277690 in words is "one hundred thirty-nine million, two hundred seventy-seven thousand, six hundred ninety".