139748790 has 32 divisors (see below), whose sum is σ = 335819520. Its totient is φ = 37219424.

The previous prime is 139748771. The next prime is 139748821. The reversal of 139748790 is 97847931.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 25951 + ... + 30869.

It is an arithmetic number, because the mean of its divisors is an integer number (10494360).

Almost surely, 2^139748790 is an apocalyptic number.

139748790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139748790 is an abundant number, since it is smaller than the sum of its proper divisors (196070730).

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

139748790 is a wasteful number, since it uses less digits than its factorization.

139748790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5876.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 139748790 is about 11821.5392398790. The cubic root of 139748790 is about 518.9386512774.

The spelling of 139748790 in words is "one hundred thirty-nine million, seven hundred forty-eight thousand, seven hundred ninety".