405794990 has 8 divisors (see below), whose sum is σ = 730431000. Its totient is φ = 162317992.

The previous prime is 405794899. The next prime is 405795007. The reversal of 405794990 is 99497504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20289740 + ... + 20289759.

It is an arithmetic number, because the mean of its divisors is an integer number (91303875).

Almost surely, 2^405794990 is an apocalyptic number.

405794990 is a deficient number, since it is larger than the sum of its proper divisors (324636010).

405794990 is a wasteful number, since it uses less digits than its factorization.

405794990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40579506.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 405794990 is about 20144.3537995141. The cubic root of 405794990 is about 740.3474080965.

The spelling of 405794990 in words is "four hundred five million, seven hundred ninety-four thousand, nine hundred ninety".