78893629 has 4 divisors (see below), whose sum is σ = 78931584. Its totient is φ = 78855676.

The previous prime is 78893621. The next prime is 78893641. The reversal of 78893629 is 92639887.

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 a cyclic number.

It is not a de Polignac number, because 78893629 - 2³ = 78893621 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 (78893621) 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, 15667 + ... + 20080.

It is an arithmetic number, because the mean of its divisors is an integer number (19732896).

Almost surely, 2^78893629 is an apocalyptic number.

It is an amenable number.

78893629 is a deficient number, since it is larger than the sum of its proper divisors (37955).

78893629 is a wasteful number, since it uses less digits than its factorization.

78893629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37954.

The product of its digits is 1306368, while the sum is 52.

The square root of 78893629 is about 8882.2085654414. The cubic root of 78893629 is about 428.8913735074.

The spelling of 78893629 in words is "seventy-eight million, eight hundred ninety-three thousand, six hundred twenty-nine".