39959473 has 2 divisors, whose sum is σ = 39959474. Its totient is φ = 39959472.

The previous prime is 39959467. The next prime is 39959497. The reversal of 39959473 is 37495993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20493729 + 19465744 = 4527^2 + 4412^2 .

It is a cyclic number.

It is not a de Polignac number, because 39959473 - 2¹⁷ = 39828401 is a prime.

It is not a weakly prime, because it can be changed into another prime (39959443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19979736 + 19979737.

It is an arithmetic number, because the mean of its divisors is an integer number (19979737).

Almost surely, 2^39959473 is an apocalyptic number.

It is an amenable number.

39959473 is a deficient number, since it is larger than the sum of its proper divisors (1).

39959473 is an equidigital number, since it uses as much as digits as its factorization.

39959473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 49.

The square root of 39959473 is about 6321.3505677189. The cubic root of 39959473 is about 341.8796499807.

The spelling of 39959473 in words is "thirty-nine million, nine hundred fifty-nine thousand, four hundred seventy-three".