406459990 has 16 divisors (see below), whose sum is σ = 732872448. Its totient is φ = 162307456.

The previous prime is 406459981. The next prime is 406460011. The reversal of 406459990 is 99954604.

It is a self number, because there is not a number n which added to its sum of digits gives 406459990.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28342 + ... + 40201.

It is an arithmetic number, because the mean of its divisors is an integer number (45804528).

Almost surely, 2^406459990 is an apocalyptic number.

406459990 is a deficient number, since it is larger than the sum of its proper divisors (326412458).

406459990 is a wasteful number, since it uses less digits than its factorization.

406459990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69143.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 406459990 is about 20160.8529085453. The cubic root of 406459990 is about 740.7516042595.

The spelling of 406459990 in words is "four hundred six million, four hundred fifty-nine thousand, nine hundred ninety".