475139461 has 4 divisors (see below), whose sum is σ = 475224300. Its totient is φ = 475054624.

The previous prime is 475139429. The next prime is 475139501. The reversal of 475139461 is 164931574.

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

It can be written as a sum of positive squares in 2 ways, for example, as 180364900 + 294774561 = 13430^2 + 17169^2 .

It is a cyclic number.

It is not a de Polignac number, because 475139461 - 2⁵ = 475139429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475839461) 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, 33376 + ... + 45433.

It is an arithmetic number, because the mean of its divisors is an integer number (118806075).

Almost surely, 2^475139461 is an apocalyptic number.

It is an amenable number.

475139461 is a deficient number, since it is larger than the sum of its proper divisors (84839).

475139461 is an equidigital number, since it uses as much as digits as its factorization.

475139461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84838.

The product of its digits is 90720, while the sum is 40.

The square root of 475139461 is about 21797.6939376623. The cubic root of 475139461 is about 780.3217284436.

The spelling of 475139461 in words is "four hundred seventy-five million, one hundred thirty-nine thousand, four hundred sixty-one".