7440087 has 16 divisors (see below), whose sum is σ = 10261728. Its totient is φ = 4792320.

The previous prime is 7440061. The next prime is 7440089. The reversal of 7440087 is 7800447.

It is a de Polignac number, because none of the positive numbers 2^k-7440087 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7440089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11287 + ... + 11927.

It is an arithmetic number, because the mean of its divisors is an integer number (641358).

Almost surely, 2^7440087 is an apocalyptic number.

7440087 is a deficient number, since it is larger than the sum of its proper divisors (2821641).

7440087 is a wasteful number, since it uses less digits than its factorization.

7440087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 7440087 is about 2727.6522872243. The cubic root of 7440087 is about 195.2207624689.

The spelling of 7440087 in words is "seven million, four hundred forty thousand, eighty-seven".