409090398 has 16 divisors (see below), whose sum is σ = 819853056. Its totient is φ = 136084760.

The previous prime is 409090393. The next prime is 409090421. The reversal of 409090398 is 893090904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409090393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66486 + ... + 72377.

It is an arithmetic number, because the mean of its divisors is an integer number (51240816).

Almost surely, 2^409090398 is an apocalyptic number.

409090398 is an abundant number, since it is smaller than the sum of its proper divisors (410762658).

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

409090398 is a wasteful number, since it uses less digits than its factorization.

409090398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139359.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 409090398 is about 20225.9832393879. The cubic root of 409090398 is about 742.3460955938.

The spelling of 409090398 in words is "four hundred nine million, ninety thousand, three hundred ninety-eight".