100999149 has 4 divisors (see below), whose sum is σ = 134665536. Its totient is φ = 67332764.

The previous prime is 100999123. The next prime is 100999169. The reversal of 100999149 is 941999001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 941999001 = 3 ⋅313999667.

It is a cyclic number.

It is not a de Polignac number, because 100999149 - 2¹³ = 100990957 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 100999149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100999109) 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, 16833189 + ... + 16833194.

It is an arithmetic number, because the mean of its divisors is an integer number (33666384).

Almost surely, 2^100999149 is an apocalyptic number.

It is an amenable number.

100999149 is a deficient number, since it is larger than the sum of its proper divisors (33666387).

100999149 is an equidigital number, since it uses as much as digits as its factorization.

100999149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33666386.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 100999149 is about 10049.8332821993. The cubic root of 100999149 is about 465.6996428179.

The spelling of 100999149 in words is "one hundred million, nine hundred ninety-nine thousand, one hundred forty-nine".