3999250 has 32 divisors (see below), whose sum is σ = 7935408. Its totient is φ = 1504000.

The previous prime is 3999239. The next prime is 3999251. The reversal of 3999250 is 529993.

It can be written as a sum of positive squares in 8 ways, for example, as 573049 + 3426201 = 757^2 + 1851^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3780 + ... + 4720.

Almost surely, 2^3999250 is an apocalyptic number.

3999250 is a deficient number, since it is larger than the sum of its proper divisors (3936158).

3999250 is a wasteful number, since it uses less digits than its factorization.

3999250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 3999250 is about 1999.8124912101. The cubic root of 3999250 is about 158.7301833201.

The spelling of 3999250 in words is "three million, nine hundred ninety-nine thousand, two hundred fifty".