406969916 has 24 divisors (see below), whose sum is σ = 724009104. Its totient is φ = 200132480.

The previous prime is 406969903. The next prime is 406969943. The reversal of 406969916 is 619969604.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74726 + ... + 79986.

It is an arithmetic number, because the mean of its divisors is an integer number (30167046).

Almost surely, 2^406969916 is an apocalyptic number.

It is an amenable number.

406969916 is a deficient number, since it is larger than the sum of its proper divisors (317039188).

406969916 is a wasteful number, since it uses less digits than its factorization.

406969916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5581 (or 5579 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 406969916 is about 20173.4953837950. The cubic root of 406969916 is about 741.0612457671.

The spelling of 406969916 in words is "four hundred six million, nine hundred sixty-nine thousand, nine hundred sixteen".