139911390 has 48 divisors (see below), whose sum is σ = 364371696. Its totient is φ = 37248000.

The previous prime is 139911367. The next prime is 139911397. The reversal of 139911390 is 93119931.

139911390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139911397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86590 + ... + 88190.

It is an arithmetic number, because the mean of its divisors is an integer number (7591077).

Almost surely, 2^139911390 is an apocalyptic number.

139911390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139911390 is an abundant number, since it is smaller than the sum of its proper divisors (224460306).

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

139911390 is a wasteful number, since it uses less digits than its factorization.

139911390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585 (or 2582 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 139911390 is about 11828.4145175928. The cubic root of 139911390 is about 519.1398378022.

The spelling of 139911390 in words is "one hundred thirty-nine million, nine hundred eleven thousand, three hundred ninety".