39698497 has 2 divisors, whose sum is σ = 39698498. Its totient is φ = 39698496.

The previous prime is 39698489. The next prime is 39698509. The reversal of 39698497 is 79489693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21242881 + 18455616 = 4609^2 + 4296^2 .

It is a cyclic number.

It is not a de Polignac number, because 39698497 - 2³ = 39698489 is a prime.

It is not a weakly prime, because it can be changed into another prime (39698297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19849248 + 19849249.

It is an arithmetic number, because the mean of its divisors is an integer number (19849249).

Almost surely, 2^39698497 is an apocalyptic number.

It is an amenable number.

39698497 is a deficient number, since it is larger than the sum of its proper divisors (1).

39698497 is an equidigital number, since it uses as much as digits as its factorization.

39698497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

The square root of 39698497 is about 6300.6743289905. The cubic root of 39698497 is about 341.1337498449.

The spelling of 39698497 in words is "thirty-nine million, six hundred ninety-eight thousand, four hundred ninety-seven".