2403539440 has 20 divisors (see below), whose sum is σ = 5588229384. Its totient is φ = 961415744.

The previous prime is 2403539431. The next prime is 2403539443. The reversal of 2403539440 is 449353042.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 2403539396 and 2403539405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403539443) 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, 15022042 + ... + 15022201.

Almost surely, 2^2403539440 is an apocalyptic number.

2403539440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2403539440 is an abundant number, since it is smaller than the sum of its proper divisors (3184689944).

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

2403539440 is a wasteful number, since it uses less digits than its factorization.

2403539440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30044256 (or 30044250 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 2403539440 is about 49025.9058049925. The cubic root of 2403539440 is about 1339.5237484796.

The spelling of 2403539440 in words is "two billion, four hundred three million, five hundred thirty-nine thousand, four hundred forty".