7940440497 has 32 divisors (see below), whose sum is σ = 12014271360. Its totient is φ = 4620672000.

The previous prime is 7940440477. The next prime is 7940440511.

7940440497 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7940440497 - 2⁶ = 7940440433 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7940440447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150297 + ... + 196137.

It is an arithmetic number, because the mean of its divisors is an integer number (375445980).

Almost surely, 2^7940440497 is an apocalyptic number.

It is an amenable number.

7940440497 is a deficient number, since it is larger than the sum of its proper divisors (4073830863).

7940440497 is a wasteful number, since it uses less digits than its factorization.

7940440497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46065.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 7940440497 is about 89109.1493450588. The cubic root of 7940440497 is about 1995.0243397512.

The spelling of 7940440497 in words is "seven billion, nine hundred forty million, four hundred forty thousand, four hundred ninety-seven".