399760037 has 2 divisors, whose sum is σ = 399760038. Its totient is φ = 399760036.

The previous prime is 399760013. The next prime is 399760061. The reversal of 399760037 is 730067993.

It is a Cunningham number, because it is equal to 19994²+1.

It is a balanced prime because it is at equal distance from previous prime (399760013) and next prime (399760061).

It can be written as a sum of positive squares in only one way, i.e., 399760036 + 1 = 19994^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 399760037 - 2⁸ = 399759781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 399760037.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (399760087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199880018 + 199880019.

It is an arithmetic number, because the mean of its divisors is an integer number (199880019).

Almost surely, 2^399760037 is an apocalyptic number.

It is an amenable number.

399760037 is a deficient number, since it is larger than the sum of its proper divisors (1).

399760037 is an equidigital number, since it uses as much as digits as its factorization.

399760037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 399760037 is about 19994.0000250075. Note that the first 4 decimals coincide. The cubic root of 399760037 is about 736.6589317133.

The spelling of 399760037 in words is "three hundred ninety-nine million, seven hundred sixty thousand, thirty-seven".