39699923 has 8 divisors (see below), whose sum is σ = 40089600. Its totient is φ = 39312520.

The previous prime is 39699901. The next prime is 39699953. The reversal of 39699923 is 32999693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39699923 - 2¹² = 39695827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39699953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65978 + ... + 66576.

It is an arithmetic number, because the mean of its divisors is an integer number (5011200).

Almost surely, 2^39699923 is an apocalyptic number.

39699923 is a deficient number, since it is larger than the sum of its proper divisors (389677).

39699923 is a wasteful number, since it uses less digits than its factorization.

39699923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137.

The product of its digits is 708588, while the sum is 50.

The square root of 39699923 is about 6300.7874904650. The cubic root of 39699923 is about 341.1378343900.

The spelling of 39699923 in words is "thirty-nine million, six hundred ninety-nine thousand, nine hundred twenty-three".