100408149 has 6 divisors (see below), whose sum is σ = 145034006. Its totient is φ = 66938760.

The previous prime is 100408093. The next prime is 100408153. The reversal of 100408149 is 941804001.

It can be written as a sum of positive squares in only one way, i.e., 69605649 + 30802500 = 8343^2 + 5550^2 .

It is not a de Polignac number, because 100408149 - 2²⁰ = 99359573 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 (100408159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5578222 + ... + 5578239.

Almost surely, 2^100408149 is an apocalyptic number.

It is an amenable number.

100408149 is a deficient number, since it is larger than the sum of its proper divisors (44625857).

100408149 is a wasteful number, since it uses less digits than its factorization.

100408149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11156467 (or 11156464 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 100408149 is about 10020.3866691860. The cubic root of 100408149 is about 464.7895127823.

The spelling of 100408149 in words is "one hundred million, four hundred eight thousand, one hundred forty-nine".