100558959 has 8 divisors (see below), whose sum is σ = 135057840. Its totient is φ = 66549696.

The previous prime is 100558949. The next prime is 100558973. The reversal of 100558959 is 959855001.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-100558959 is a prime.

It is a super-2 number, since 2×100558959² = 20224208470327362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100558959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100558949) 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, 121924 + ... + 122745.

It is an arithmetic number, because the mean of its divisors is an integer number (16882230).

Almost surely, 2^100558959 is an apocalyptic number.

100558959 is a deficient number, since it is larger than the sum of its proper divisors (34498881).

100558959 is a wasteful number, since it uses less digits than its factorization.

100558959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244809.

The product of its (nonzero) digits is 81000, while the sum is 42.

The square root of 100558959 is about 10027.9090043737. The cubic root of 100558959 is about 465.0220963023.

The spelling of 100558959 in words is "one hundred million, five hundred fifty-eight thousand, nine hundred fifty-nine".