403243998 has 8 divisors (see below), whose sum is σ = 806488008. Its totient is φ = 134414664.

The previous prime is 403243991. The next prime is 403244053. The reversal of 403243998 is 899342304.

It is a happy number.

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

403243998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403243991) 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, 33603661 + ... + 33603672.

It is an arithmetic number, because the mean of its divisors is an integer number (100811001).

Almost surely, 2^403243998 is an apocalyptic number.

403243998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

403243998 is a wasteful number, since it uses less digits than its factorization.

403243998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67207338.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 403243998 is about 20080.9361833556. The cubic root of 403243998 is about 738.7927710785.

The spelling of 403243998 in words is "four hundred three million, two hundred forty-three thousand, nine hundred ninety-eight".