7440091965 has 24 divisors (see below), whose sum is σ = 12898249728. Its totient is φ = 3967405920.

The previous prime is 7440091961. The next prime is 7440091969. The reversal of 7440091965 is 5691900447.

7440091965 is a `hidden beast` number, since 74 + 400 + 91 + 96 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (7440091961) and next prime (7440091969).

It is not a de Polignac number, because 7440091965 - 2² = 7440091961 is a prime.

It is a super-2 number, since 2×7440091965² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7440091965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7440091961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 424812 + ... + 441978.

It is an arithmetic number, because the mean of its divisors is an integer number (537427072).

Almost surely, 2^7440091965 is an apocalyptic number.

It is an amenable number.

7440091965 is a deficient number, since it is larger than the sum of its proper divisors (5458157763).

7440091965 is a wasteful number, since it uses less digits than its factorization.

7440091965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26809 (or 26806 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 7440091965 is about 86255.9677065883. The cubic root of 7440091965 is about 1952.2080589452.

The spelling of 7440091965 in words is "seven billion, four hundred forty million, ninety-one thousand, nine hundred sixty-five".