405849398 has 16 divisors (see below), whose sum is σ = 672611040. Its totient is φ = 182683776.

The previous prime is 405849391. The next prime is 405849407. The reversal of 405849398 is 893948504.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405849391) 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, 258713 + ... + 260276.

It is an arithmetic number, because the mean of its divisors is an integer number (42038190).

Almost surely, 2^405849398 is an apocalyptic number.

405849398 is a deficient number, since it is larger than the sum of its proper divisors (266761642).

405849398 is a wasteful number, since it uses less digits than its factorization.

405849398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519031.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 405849398 is about 20145.7042071008. The cubic root of 405849398 is about 740.3804946079.

The spelling of 405849398 in words is "four hundred five million, eight hundred forty-nine thousand, three hundred ninety-eight".