150139394 has 4 divisors (see below), whose sum is σ = 225209094. Its totient is φ = 75069696.

The previous prime is 150139357. The next prime is 150139397. The reversal of 150139394 is 493931051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 129663769 + 20475625 = 11387^2 + 4525^2 .

It is a super-3 number, since 3×150139394³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (150139397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37534847 + ... + 37534850.

Almost surely, 2^150139394 is an apocalyptic number.

150139394 is a deficient number, since it is larger than the sum of its proper divisors (75069700).

150139394 is an equidigital number, since it uses as much as digits as its factorization.

150139394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75069699.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 150139394 is about 12253.1381286591. The cubic root of 150139394 is about 531.4938205551.

The spelling of 150139394 in words is "one hundred fifty million, one hundred thirty-nine thousand, three hundred ninety-four".