139377890 has 24 divisors (see below), whose sum is σ = 257869332. Its totient is φ = 54239040.

The previous prime is 139377881. The next prime is 139377893. The reversal of 139377890 is 98773931.

139377890 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 6 ways, for example, as 122788561 + 16589329 = 11081^2 + 4073^2 .

It is not an unprimeable number, because it can be changed into a prime (139377893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8600 + ... + 18780.

Almost surely, 2^139377890 is an apocalyptic number.

139377890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139377890 is a deficient number, since it is larger than the sum of its proper divisors (118491442).

139377890 is a wasteful number, since it uses less digits than its factorization.

139377890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10262 (or 10225 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 139377890 is about 11805.8413507890. The cubic root of 139377890 is about 518.4791484891.

The spelling of 139377890 in words is "one hundred thirty-nine million, three hundred seventy-seven thousand, eight hundred ninety".