2999440 has 20 divisors (see below), whose sum is σ = 6973884. Its totient is φ = 1199744.

The previous prime is 2999417. The next prime is 2999443. The reversal of 2999440 is 449992.

2999440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 891136 + 2108304 = 944^2 + 1452^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2999440.

It is not an unprimeable number, because it can be changed into a prime (2999443) 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, 18667 + ... + 18826.

2^2999440 is an apocalyptic number.

2999440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2999440 is an abundant number, since it is smaller than the sum of its proper divisors (3974444).

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

2999440 is a wasteful number, since it uses less digits than its factorization.

2999440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37506 (or 37500 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2999440 is about 1731.8891419488. The cubic root of 2999440 is about 144.2159824750.

The spelling of 2999440 in words is "two million, nine hundred ninety-nine thousand, four hundred forty".