57879989 has 4 divisors (see below), whose sum is σ = 57921120. Its totient is φ = 57838860.

The previous prime is 57879977. The next prime is 57880001. The reversal of 57879989 is 98997875.

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 an interprime number because it is at equal distance from previous prime (57879977) and next prime (57880001).

It is a cyclic number.

It is not a de Polignac number, because 57879989 - 2¹⁶ = 57814453 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 (57879929) 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, 18377 + ... + 21294.

It is an arithmetic number, because the mean of its divisors is an integer number (14480280).

Almost surely, 2^57879989 is an apocalyptic number.

It is an amenable number.

57879989 is a deficient number, since it is larger than the sum of its proper divisors (41131).

57879989 is a wasteful number, since it uses less digits than its factorization.

57879989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41130.

The product of its digits is 11430720, while the sum is 62.

The square root of 57879989 is about 7607.8899177104. The cubic root of 57879989 is about 386.8204982280.

The spelling of 57879989 in words is "fifty-seven million, eight hundred seventy-nine thousand, nine hundred eighty-nine".