78952213 has 4 divisors (see below), whose sum is σ = 80064288. Its totient is φ = 77840140.

The previous prime is 78952177. The next prime is 78952231. The reversal of 78952213 is 31225987.

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.

It is not a de Polignac number, because 78952213 - 2⁹ = 78951701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78952513) 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, 555931 + ... + 556072.

It is an arithmetic number, because the mean of its divisors is an integer number (20016072).

Almost surely, 2^78952213 is an apocalyptic number.

It is an amenable number.

78952213 is a deficient number, since it is larger than the sum of its proper divisors (1112075).

78952213 is a wasteful number, since it uses less digits than its factorization.

78952213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112074.

The product of its digits is 30240, while the sum is 37.

The square root of 78952213 is about 8885.5057818900. The cubic root of 78952213 is about 428.9975077872.

The spelling of 78952213 in words is "seventy-eight million, nine hundred fifty-two thousand, two hundred thirteen".