7404431 has 2 divisors, whose sum is σ = 7404432. Its totient is φ = 7404430.

The previous prime is 7404421. The next prime is 7404437. The reversal of 7404431 is 1344047.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7404431 is a prime.

It is a super-2 number, since 2×7404431² = 109651196867522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7404397 and 7404406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7404437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3702215 + 3702216.

It is an arithmetic number, because the mean of its divisors is an integer number (3702216).

Almost surely, 2^7404431 is an apocalyptic number.

7404431 is a deficient number, since it is larger than the sum of its proper divisors (1).

7404431 is an equidigital number, since it uses as much as digits as its factorization.

7404431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 7404431 is about 2721.1084138637. The cubic root of 7404431 is about 194.9084031789.

Adding to 7404431 its reverse (1344047), we get a palindrome (8748478).

The spelling of 7404431 in words is "seven million, four hundred four thousand, four hundred thirty-one".