39993746 has 24 divisors (see below), whose sum is σ = 68200524. Its totient is φ = 17483040.

The previous prime is 39993731. The next prime is 39993749. The reversal of 39993746 is 64739993.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39551521 + 442225 = 6289^2 + 665^2 .

It is a super-2 number, since 2×39993746² = 3198999438225032, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39993694 and 39993703.

It is not an unprimeable number, because it can be changed into a prime (39993749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7256 + ... + 11516.

Almost surely, 2^39993746 is an apocalyptic number.

39993746 is a deficient number, since it is larger than the sum of its proper divisors (28206778).

39993746 is a wasteful number, since it uses less digits than its factorization.

39993746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314 (or 4295 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 50.

The square root of 39993746 is about 6324.0608788974. The cubic root of 39993746 is about 341.9773647571.

The spelling of 39993746 in words is "thirty-nine million, nine hundred ninety-three thousand, seven hundred forty-six".