404549398 has 16 divisors (see below), whose sum is σ = 676076544. Its totient is φ = 179973160.

The previous prime is 404549393. The next prime is 404549399. The reversal of 404549398 is 893945404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404549393) 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, 194590 + ... + 196657.

It is an arithmetic number, because the mean of its divisors is an integer number (42254784).

Almost surely, 2^404549398 is an apocalyptic number.

404549398 is a deficient number, since it is larger than the sum of its proper divisors (271527146).

404549398 is a wasteful number, since it uses less digits than its factorization.

404549398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391307.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 404549398 is about 20113.4133851020. The cubic root of 404549398 is about 739.5891303278.

The spelling of 404549398 in words is "four hundred four million, five hundred forty-nine thousand, three hundred ninety-eight".