409994901 has 12 divisors (see below), whose sum is σ = 623384320. Its totient is φ = 258944040.

The previous prime is 409994881. The next prime is 409994917. The reversal of 409994901 is 109499904.

It is a de Polignac number, because none of the positive numbers 2^k-409994901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409994951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1198645 + ... + 1198986.

Almost surely, 2^409994901 is an apocalyptic number.

It is an amenable number.

409994901 is a deficient number, since it is larger than the sum of its proper divisors (213389419).

409994901 is a wasteful number, since it uses less digits than its factorization.

409994901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397656 (or 2397653 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 409994901 is about 20248.3308200948. The cubic root of 409994901 is about 742.8928044359.

The spelling of 409994901 in words is "four hundred nine million, nine hundred ninety-four thousand, nine hundred one".