3926431 has 2 divisors, whose sum is σ = 3926432. Its totient is φ = 3926430.

The previous prime is 3926423. The next prime is 3926441. The reversal of 3926431 is 1346293.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3926431 - 2³ = 3926423 is a prime.

It is a super-2 number, since 2×3926431² = 30833720795522, which contains 22 as substring.

It is equal to p₂₇₈₃₄₄ and since 3926431 and 278344 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3926431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3926441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1963215 + 1963216.

It is an arithmetic number, because the mean of its divisors is an integer number (1963216).

Almost surely, 2^3926431 is an apocalyptic number.

3926431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3926431 is an equidigital number, since it uses as much as digits as its factorization.

3926431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 3926431 is about 1981.5223945240. The cubic root of 3926431 is about 157.7608811540.

The spelling of 3926431 in words is "three million, nine hundred twenty-six thousand, four hundred thirty-one".