2309046440 has 32 divisors (see below), whose sum is σ = 5468796000. Its totient is φ = 875006784.

The previous prime is 2309046431. The next prime is 2309046461. The reversal of 2309046440 is 446409032.

It is a super-3 number, since 3×2309046440³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2309046397 and 2309046406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1518350 + ... + 1519869.

It is an arithmetic number, because the mean of its divisors is an integer number (170899875).

Almost surely, 2^2309046440 is an apocalyptic number.

2309046440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2309046440 is an abundant number, since it is smaller than the sum of its proper divisors (3159749560).

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

2309046440 is a wasteful number, since it uses less digits than its factorization.

2309046440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038249 (or 3038245 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2309046440 is about 48052.5383304566. The cubic root of 2309046440 is about 1321.7344890784.

The spelling of 2309046440 in words is "two billion, three hundred nine million, forty-six thousand, four hundred forty".