475406969 has 4 divisors (see below), whose sum is σ = 488255844. Its totient is φ = 462558096.

The previous prime is 475406959. The next prime is 475406993. The reversal of 475406969 is 969604574.

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 357966400 + 117440569 = 18920^2 + 10837^2 .

It is a cyclic number.

It is not a de Polignac number, because 475406969 - 2²⁰ = 474358393 is a prime.

It is a super-2 number, since 2×475406969² = 452023572347533922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (475406959) 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, 6424382 + ... + 6424455.

It is an arithmetic number, because the mean of its divisors is an integer number (122063961).

Almost surely, 2^475406969 is an apocalyptic number.

It is an amenable number.

475406969 is a deficient number, since it is larger than the sum of its proper divisors (12848875).

475406969 is a wasteful number, since it uses less digits than its factorization.

475406969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12848874.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 475406969 is about 21803.8292279132. The cubic root of 475406969 is about 780.4681438014.

The spelling of 475406969 in words is "four hundred seventy-five million, four hundred six thousand, nine hundred sixty-nine".