39934457 has 2 divisors, whose sum is σ = 39934458. Its totient is φ = 39934456.

The previous prime is 39934397. The next prime is 39934469. The reversal of 39934457 is 75443993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38241856 + 1692601 = 6184^2 + 1301^2 .

It is a cyclic number.

It is not a de Polignac number, because 39934457 - 2⁶ = 39934393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39934357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19967228 + 19967229.

It is an arithmetic number, because the mean of its divisors is an integer number (19967229).

Almost surely, 2^39934457 is an apocalyptic number.

It is an amenable number.

39934457 is a deficient number, since it is larger than the sum of its proper divisors (1).

39934457 is an equidigital number, since it uses as much as digits as its factorization.

39934457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 39934457 is about 6319.3715668569. The cubic root of 39934457 is about 341.8082922941.

The spelling of 39934457 in words is "thirty-nine million, nine hundred thirty-four thousand, four hundred fifty-seven".