39698699 has 2 divisors, whose sum is σ = 39698700. Its totient is φ = 39698698.

The previous prime is 39698677. The next prime is 39698707. The reversal of 39698699 is 99689693.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39698699 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (39698609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19849349 + 19849350.

It is an arithmetic number, because the mean of its divisors is an integer number (19849350).

Almost surely, 2^39698699 is an apocalyptic number.

39698699 is a deficient number, since it is larger than the sum of its proper divisors (1).

39698699 is an equidigital number, since it uses as much as digits as its factorization.

39698699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5668704, while the sum is 59.

The square root of 39698699 is about 6300.6903590004. The cubic root of 39698699 is about 341.1343284470.

The spelling of 39698699 in words is "thirty-nine million, six hundred ninety-eight thousand, six hundred ninety-nine".