139798040 has 16 divisors (see below), whose sum is σ = 314545680. Its totient is φ = 55919200.

The previous prime is 139798033. The next prime is 139798051. The reversal of 139798040 is 40897931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1747436 + ... + 1747515.

It is an arithmetic number, because the mean of its divisors is an integer number (19659105).

Almost surely, 2^139798040 is an apocalyptic number.

139798040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139798040 is an abundant number, since it is smaller than the sum of its proper divisors (174747640).

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

139798040 is a wasteful number, since it uses less digits than its factorization.

139798040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494962 (or 3494958 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 139798040 is about 11823.6221184542. The cubic root of 139798040 is about 518.9996052383. Note that the first 3 decimals are identical.

The spelling of 139798040 in words is "one hundred thirty-nine million, seven hundred ninety-eight thousand, forty".