75494139 has 8 divisors (see below), whose sum is σ = 115038720. Its totient is φ = 43139496.

The previous prime is 75494129. The next prime is 75494179. The reversal of 75494139 is 93149457.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 75494139 - 2⁴ = 75494123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75494139.

It is not an unprimeable number, because it can be changed into a prime (75494129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1797459 + ... + 1797500.

It is an arithmetic number, because the mean of its divisors is an integer number (14379840).

Almost surely, 2^75494139 is an apocalyptic number.

75494139 is a deficient number, since it is larger than the sum of its proper divisors (39544581).

75494139 is a wasteful number, since it uses less digits than its factorization.

75494139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594969.

The product of its digits is 136080, while the sum is 42.

The square root of 75494139 is about 8688.7363292944. The cubic root of 75494139 is about 422.6404682148.

The spelling of 75494139 in words is "seventy-five million, four hundred ninety-four thousand, one hundred thirty-nine".