475371139 has 4 divisors (see below), whose sum is σ = 475549200. Its totient is φ = 475193080.

The previous prime is 475371133. The next prime is 475371157. The reversal of 475371139 is 931173574.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931173574 = 2 ⋅465586787.

It is a cyclic number.

It is not a de Polignac number, because 475371139 - 2¹¹ = 475369091 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475371133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84964 + ... + 90385.

It is an arithmetic number, because the mean of its divisors is an integer number (118887300).

Almost surely, 2^475371139 is an apocalyptic number.

475371139 is a deficient number, since it is larger than the sum of its proper divisors (178061).

475371139 is a wasteful number, since it uses less digits than its factorization.

475371139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178060.

The product of its digits is 79380, while the sum is 40.

The square root of 475371139 is about 21803.0075677646. The cubic root of 475371139 is about 780.4485361263.

The spelling of 475371139 in words is "four hundred seventy-five million, three hundred seventy-one thousand, one hundred thirty-nine".