100789949 has 16 divisors (see below), whose sum is σ = 111428352. Its totient is φ = 90585408.

The previous prime is 100789943. The next prime is 100789981. The reversal of 100789949 is 949987001.

It is a cyclic number.

It is not a de Polignac number, because 100789949 - 2²⁰ = 99741373 is a prime.

It is a super-2 number, since 2×100789949² = 20317227638845202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100789943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178742 + ... + 179304.

It is an arithmetic number, because the mean of its divisors is an integer number (6964272).

Almost surely, 2^100789949 is an apocalyptic number.

It is an amenable number.

100789949 is a deficient number, since it is larger than the sum of its proper divisors (10638403).

100789949 is a wasteful number, since it uses less digits than its factorization.

100789949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 100789949 is about 10039.4197541491. The cubic root of 100789949 is about 465.3778852951.

The spelling of 100789949 in words is "one hundred million, seven hundred eighty-nine thousand, nine hundred forty-nine".