403097856 has 144 divisors (see below), whose sum is σ = 1240331904. Its totient is φ = 113836032.

The previous prime is 403097843. The next prime is 403097857. The reversal of 403097856 is 658790304.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (403097857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521086 + ... + 521858.

It is an arithmetic number, because the mean of its divisors is an integer number (8613416).

Almost surely, 2^403097856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 403097856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620165952).

403097856 is an abundant number, since it is smaller than the sum of its proper divisors (837234048).

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

403097856 is an equidigital number, since it uses as much as digits as its factorization.

403097856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 882 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 403097856 is about 20077.2970292318. The cubic root of 403097856 is about 738.7035102343.

The spelling of 403097856 in words is "four hundred three million, ninety-seven thousand, eight hundred fifty-six".