39987050 has 12 divisors (see below), whose sum is σ = 74376006. Its totient is φ = 15994800.

The previous prime is 39987049. The next prime is 39987067. The reversal of 39987050 is 5078993.

It can be written as a sum of positive squares in 3 ways, for example, as 27994681 + 11992369 = 5291^2 + 3463^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39986989 and 39987007.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399821 + ... + 399920.

Almost surely, 2^39987050 is an apocalyptic number.

39987050 is a deficient number, since it is larger than the sum of its proper divisors (34388956).

39987050 is a wasteful number, since it uses less digits than its factorization.

39987050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799753 (or 799748 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 39987050 is about 6323.5314500681. The cubic root of 39987050 is about 341.9582783709.

The spelling of 39987050 in words is "thirty-nine million, nine hundred eighty-seven thousand, fifty".