406331398 has 8 divisors (see below), whose sum is σ = 664905960. Its totient is φ = 184696080.

The previous prime is 406331371. The next prime is 406331411. The reversal of 406331398 is 893133604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9234783 + ... + 9234826.

It is an arithmetic number, because the mean of its divisors is an integer number (83113245).

Almost surely, 2^406331398 is an apocalyptic number.

406331398 is a deficient number, since it is larger than the sum of its proper divisors (258574562).

406331398 is a wasteful number, since it uses less digits than its factorization.

406331398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18469622.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 406331398 is about 20157.6635054760. The cubic root of 406331398 is about 740.6734786714.

The spelling of 406331398 in words is "four hundred six million, three hundred thirty-one thousand, three hundred ninety-eight".