4640431 has 8 divisors (see below), whose sum is σ = 4777344. Its totient is φ = 4504920.

The previous prime is 4640423. The next prime is 4640437. The reversal of 4640431 is 1340464.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4640431 - 2³ = 4640423 is a prime.

It is a super-2 number, since 2×4640431² = 43067199731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13200 + ... + 13546.

It is an arithmetic number, because the mean of its divisors is an integer number (597168).

Almost surely, 2^4640431 is an apocalyptic number.

4640431 is a deficient number, since it is larger than the sum of its proper divisors (136913).

4640431 is a wasteful number, since it uses less digits than its factorization.

4640431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4640431 is about 2154.1659638941. The cubic root of 4640431 is about 166.7961824390.

Adding to 4640431 its reverse (1340464), we get a palindrome (5980895).

The spelling of 4640431 in words is "four million, six hundred forty thousand, four hundred thirty-one".