401993802 has 96 divisors (see below), whose sum is σ = 1039094784. Its totient is φ = 109900800.

The previous prime is 401993797. The next prime is 401993803. The reversal of 401993802 is 208399104.

It is not an unprimeable number, because it can be changed into a prime (401993803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 378352 + ... + 379412.

It is an arithmetic number, because the mean of its divisors is an integer number (10823904).

Almost surely, 2^401993802 is an apocalyptic number.

401993802 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 401993802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519547392).

401993802 is an abundant number, since it is smaller than the sum of its proper divisors (637100982).

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

401993802 is a wasteful number, since it uses less digits than its factorization.

401993802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 401993802 is about 20049.7830910960. The cubic root of 401993802 is about 738.0284762185.

The spelling of 401993802 in words is "four hundred one million, nine hundred ninety-three thousand, eight hundred two".