39808474 has 8 divisors (see below), whose sum is σ = 61771860. Its totient is φ = 19217856.

The previous prime is 39808409. The next prime is 39808487. The reversal of 39808474 is 47480893.

It can be written as a sum of positive squares in 2 ways, for example, as 38502025 + 1306449 = 6205^2 + 1143^2 .

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

It is a super-3 number, since 3×39808474³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39808474.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343119 + ... + 343234.

Almost surely, 2^39808474 is an apocalyptic number.

39808474 is a deficient number, since it is larger than the sum of its proper divisors (21963386).

39808474 is a wasteful number, since it uses less digits than its factorization.

39808474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686384.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 39808474 is about 6309.3956921404. The cubic root of 39808474 is about 341.4484743983.

The spelling of 39808474 in words is "thirty-nine million, eight hundred eight thousand, four hundred seventy-four".