88440557 has 4 divisors (see below), whose sum is σ = 89076960. Its totient is φ = 87804156.

The previous prime is 88440533. The next prime is 88440559. The reversal of 88440557 is 75504488.

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 88440557 - 2¹⁴ = 88424173 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 (88440559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317993 + ... + 318270.

It is an arithmetic number, because the mean of its divisors is an integer number (22269240).

Almost surely, 2^88440557 is an apocalyptic number.

It is an amenable number.

88440557 is a deficient number, since it is larger than the sum of its proper divisors (636403).

88440557 is a wasteful number, since it uses less digits than its factorization.

88440557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636402.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 88440557 is about 9404.2839706168. The cubic root of 88440557 is about 445.5370480219.

The spelling of 88440557 in words is "eighty-eight million, four hundred forty thousand, five hundred fifty-seven".