39857450 has 36 divisors (see below), whose sum is σ = 75741990. Its totient is φ = 15604320.

The previous prime is 39857443. The next prime is 39857471. The reversal of 39857450 is 5475893.

It can be written as a sum of positive squares in 3 ways, for example, as 36929929 + 2927521 = 6077^2 + 1711^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39857398 and 39857407.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 173936 + ... + 174164.

Almost surely, 2^39857450 is an apocalyptic number.

39857450 is a deficient number, since it is larger than the sum of its proper divisors (35884540).

39857450 is a wasteful number, since it uses less digits than its factorization.

39857450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 39857450 is about 6313.2756949146. The cubic root of 39857450 is about 341.5884439871.

The spelling of 39857450 in words is "thirty-nine million, eight hundred fifty-seven thousand, four hundred fifty".