39493793 has 2 divisors, whose sum is σ = 39493794. Its totient is φ = 39493792.

The previous prime is 39493789. The next prime is 39493843. The reversal of 39493793 is 39739493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38539264 + 954529 = 6208^2 + 977^2 .

It is a cyclic number.

It is not a de Polignac number, because 39493793 - 2² = 39493789 is a prime.

It is not a weakly prime, because it can be changed into another prime (39493693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19746896 + 19746897.

It is an arithmetic number, because the mean of its divisors is an integer number (19746897).

Almost surely, 2^39493793 is an apocalyptic number.

It is an amenable number.

39493793 is a deficient number, since it is larger than the sum of its proper divisors (1).

39493793 is an equidigital number, since it uses as much as digits as its factorization.

39493793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 47.

The square root of 39493793 is about 6284.4087231815. The cubic root of 39493793 is about 340.5463907818.

The spelling of 39493793 in words is "thirty-nine million, four hundred ninety-three thousand, seven hundred ninety-three".