7940431 has 4 divisors (see below), whose sum is σ = 8070664. Its totient is φ = 7810200.

The previous prime is 7940419. The next prime is 7940437. The reversal of 7940431 is 1340497.

7940431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7940431 - 2⁵ = 7940399 is a prime.

It is a super-2 number, since 2×7940431² = 126100888931522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7940431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940437) 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 3 ways as a sum of consecutive naturals, for example, 65025 + ... + 65146.

It is an arithmetic number, because the mean of its divisors is an integer number (2017666).

Almost surely, 2^7940431 is an apocalyptic number.

7940431 is a deficient number, since it is larger than the sum of its proper divisors (130233).

7940431 is a wasteful number, since it uses less digits than its factorization.

7940431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130232.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 7940431 is about 2817.8770377715. The cubic root of 7940431 is about 199.5023544382.

The spelling of 7940431 in words is "seven million, nine hundred forty thousand, four hundred thirty-one".