39900739 has 2 divisors, whose sum is σ = 39900740. Its totient is φ = 39900738.

The previous prime is 39900719. The next prime is 39900743. The reversal of 39900739 is 93700993.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (93700993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39900739 - 2⁷ = 39900611 is a prime.

It is a super-2 number, since 2×39900739² = 3184137945492242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39900719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19950369 + 19950370.

It is an arithmetic number, because the mean of its divisors is an integer number (19950370).

Almost surely, 2^39900739 is an apocalyptic number.

39900739 is a deficient number, since it is larger than the sum of its proper divisors (1).

39900739 is an equidigital number, since it uses as much as digits as its factorization.

39900739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 40.

The square root of 39900739 is about 6316.7031749165. The cubic root of 39900739 is about 341.7120651420.

The spelling of 39900739 in words is "thirty-nine million, nine hundred thousand, seven hundred thirty-nine".