39697123 has 2 divisors, whose sum is σ = 39697124. Its totient is φ = 39697122.

The previous prime is 39697121. The next prime is 39697129. The reversal of 39697123 is 32179693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39697123 - 2¹ = 39697121 is a prime.

Together with 39697121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (39697121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19848561 + 19848562.

It is an arithmetic number, because the mean of its divisors is an integer number (19848562).

Almost surely, 2^39697123 is an apocalyptic number.

39697123 is a deficient number, since it is larger than the sum of its proper divisors (1).

39697123 is an equidigital number, since it uses as much as digits as its factorization.

39697123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 40.

The square root of 39697123 is about 6300.5652920988. The cubic root of 39697123 is about 341.1298141528.

The spelling of 39697123 in words is "thirty-nine million, six hundred ninety-seven thousand, one hundred twenty-three".