400421501398 has 8 divisors (see below), whose sum is σ = 600636085920. Its totient is φ = 200209472760.

The previous prime is 400421501393. The next prime is 400421501407. The reversal of 400421501398 is 893105124004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400421501393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181918 + ... + 913201.

It is an arithmetic number, because the mean of its divisors is an integer number (75079510740).

Almost surely, 2^400421501398 is an apocalyptic number.

400421501398 is a deficient number, since it is larger than the sum of its proper divisors (200214584522).

400421501398 is a wasteful number, since it uses less digits than its factorization.

400421501398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277942.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 400421501398 in words is "four hundred billion, four hundred twenty-one million, five hundred one thousand, three hundred ninety-eight".