39994473 has 8 divisors (see below), whose sum is σ = 53363008. Its totient is φ = 26644464.

The previous prime is 39994469. The next prime is 39994477. The reversal of 39994473 is 37449993.

It is an interprime number because it is at equal distance from previous prime (39994469) and next prime (39994477).

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

It is not a de Polignac number, because 39994473 - 2² = 39994469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39994477) 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, 1611 + ... + 9087.

It is an arithmetic number, because the mean of its divisors is an integer number (6670376).

Almost surely, 2^39994473 is an apocalyptic number.

It is an amenable number.

39994473 is a deficient number, since it is larger than the sum of its proper divisors (13368535).

39994473 is a wasteful number, since it uses less digits than its factorization.

39994473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263.

The product of its digits is 734832, while the sum is 48.

The square root of 39994473 is about 6324.1183575262. The cubic root of 39994473 is about 341.9794368814.

The spelling of 39994473 in words is "thirty-nine million, nine hundred ninety-four thousand, four hundred seventy-three".