39968953 has 4 divisors (see below), whose sum is σ = 40531968. Its totient is φ = 39405940.

The previous prime is 39968933. The next prime is 39968983. The reversal of 39968953 is 35986993.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35986993 = 7 ⋅5140999.

It is a cyclic number.

It is not a de Polignac number, because 39968953 - 2⁹ = 39968441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39968953.

It is not an unprimeable number, because it can be changed into a prime (39968923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281401 + ... + 281542.

It is an arithmetic number, because the mean of its divisors is an integer number (10132992).

Almost surely, 2^39968953 is an apocalyptic number.

It is an amenable number.

39968953 is a deficient number, since it is larger than the sum of its proper divisors (563015).

39968953 is an equidigital number, since it uses as much as digits as its factorization.

39968953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563014.

The product of its digits is 1574640, while the sum is 52.

The square root of 39968953 is about 6322.1003630123. The cubic root of 39968953 is about 341.9066837274.

The spelling of 39968953 in words is "thirty-nine million, nine hundred sixty-eight thousand, nine hundred fifty-three".