79143861 has 8 divisors (see below), whose sum is σ = 106550080. Its totient is φ = 52250112.

The previous prime is 79143853. The next prime is 79143863. The reversal of 79143861 is 16834197.

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

It is not a de Polignac number, because 79143861 - 2³ = 79143853 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 (79143863) 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, 127756 + ... + 128373.

It is an arithmetic number, because the mean of its divisors is an integer number (13318760).

Almost surely, 2^79143861 is an apocalyptic number.

It is an amenable number.

79143861 is a deficient number, since it is larger than the sum of its proper divisors (27406219).

79143861 is a wasteful number, since it uses less digits than its factorization.

79143861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256235.

The product of its digits is 36288, while the sum is 39.

The square root of 79143861 is about 8896.2835498876. The cubic root of 79143861 is about 429.3443423973.

The spelling of 79143861 in words is "seventy-nine million, one hundred forty-three thousand, eight hundred sixty-one".