4002597440 has 28 divisors (see below), whose sum is σ = 9531185916. Its totient is φ = 1601038848.

The previous prime is 4002597311. The next prime is 4002597463. The reversal of 4002597440 is 447952004.

It can be written as a sum of positive squares in 2 ways, for example, as 509314624 + 3493282816 = 22568^2 + 59104^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4002597440.

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, 6253739 + ... + 6254378.

It is an arithmetic number, because the mean of its divisors is an integer number (340399497).

Almost surely, 2^4002597440 is an apocalyptic number.

4002597440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4002597440 is an abundant number, since it is smaller than the sum of its proper divisors (5528588476).

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

4002597440 is a wasteful number, since it uses less digits than its factorization.

4002597440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12508134 (or 12508124 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 4002597440 is about 63266.0844370821. The cubic root of 4002597440 is about 1587.7445758711.

The spelling of 4002597440 in words is "four billion, two million, five hundred ninety-seven thousand, four hundred forty".