39505473 has 12 divisors (see below), whose sum is σ = 65215488. Its totient is φ = 22574520.

The previous prime is 39505469. The next prime is 39505489. The reversal of 39505473 is 37450593.

It is not a de Polignac number, because 39505473 - 2² = 39505469 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (39505423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313473 + ... + 313598.

It is an arithmetic number, because the mean of its divisors is an integer number (5434624).

Almost surely, 2^39505473 is an apocalyptic number.

It is an amenable number.

39505473 is a deficient number, since it is larger than the sum of its proper divisors (25710015).

39505473 is a wasteful number, since it uses less digits than its factorization.

39505473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627084 (or 627081 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 39505473 is about 6285.3379384087. The cubic root of 39505473 is about 340.5799588398.

The spelling of 39505473 in words is "thirty-nine million, five hundred five thousand, four hundred seventy-three".