406638798 has 16 divisors (see below), whose sum is σ = 856081920. Its totient is φ = 128412216.

The previous prime is 406638773. The next prime is 406638839. The reversal of 406638798 is 897836604.

It is a super-2 number, since 2×406638798² = 330710224077769608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 406638798.

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, 1783390 + ... + 1783617.

It is an arithmetic number, because the mean of its divisors is an integer number (53505120).

Almost surely, 2^406638798 is an apocalyptic number.

406638798 is an abundant number, since it is smaller than the sum of its proper divisors (449443122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406638798 is a wasteful number, since it uses less digits than its factorization.

406638798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567031.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 406638798 is about 20165.2869555581. The cubic root of 406638798 is about 740.8602110090.

The spelling of 406638798 in words is "four hundred six million, six hundred thirty-eight thousand, seven hundred ninety-eight".