139794440 has 16 divisors (see below), whose sum is σ = 314537580. Its totient is φ = 55917760.

The previous prime is 139794439. The next prime is 139794509. The reversal of 139794440 is 44497931.

It can be written as a sum of positive squares in 2 ways, for example, as 135443044 + 4351396 = 11638^2 + 2086^2 .

It is a super-3 number, since 3×139794440³ (a number of 25 digits) contains 333 as substring.

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, 1747391 + ... + 1747470.

Almost surely, 2^139794440 is an apocalyptic number.

139794440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139794440 is an abundant number, since it is smaller than the sum of its proper divisors (174743140).

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

139794440 is a wasteful number, since it uses less digits than its factorization.

139794440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3494872 (or 3494868 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 139794440 is about 11823.4698798618. The cubic root of 139794440 is about 518.9951502053.

The spelling of 139794440 in words is "one hundred thirty-nine million, seven hundred ninety-four thousand, four hundred forty".