138750404 has 12 divisors (see below), whose sum is σ = 261491244. Its totient is φ = 64038624.

The previous prime is 138750347. The next prime is 138750419. The reversal of 138750404 is 404057831.

It can be written as a sum of positive squares in 2 ways, for example, as 63234304 + 75516100 = 7952^2 + 8690^2 .

It is a super-2 number, since 2×138750404² = 38503349220326432, which contains 22 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, 1334087 + ... + 1334190.

It is an arithmetic number, because the mean of its divisors is an integer number (21790937).

Almost surely, 2^138750404 is an apocalyptic number.

It is an amenable number.

138750404 is a deficient number, since it is larger than the sum of its proper divisors (122740840).

138750404 is a wasteful number, since it uses less digits than its factorization.

138750404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2668294 (or 2668292 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 138750404 is about 11779.2361382222. The cubic root of 138750404 is about 517.6999051875.

The spelling of 138750404 in words is "one hundred thirty-eight million, seven hundred fifty thousand, four hundred four".