100449491 has 2 divisors, whose sum is σ = 100449492. Its totient is φ = 100449490.

The previous prime is 100449443. The next prime is 100449497. The reversal of 100449491 is 194944001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100449491 - 2²⁶ = 33340627 is a prime.

It is a super-3 number, since 3×100449491³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (100449497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50224745 + 50224746.

It is an arithmetic number, because the mean of its divisors is an integer number (50224746).

Almost surely, 2^100449491 is an apocalyptic number.

100449491 is a deficient number, since it is larger than the sum of its proper divisors (1).

100449491 is an equidigital number, since it uses as much as digits as its factorization.

100449491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 100449491 is about 10022.4493513312. The cubic root of 100449491 is about 464.8532947614.

The spelling of 100449491 in words is "one hundred million, four hundred forty-nine thousand, four hundred ninety-one".