3890431 has 2 divisors, whose sum is σ = 3890432. Its totient is φ = 3890430.

The previous prime is 3890429. The next prime is 3890503. The reversal of 3890431 is 1340983.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3890431 - 2¹ = 3890429 is a prime.

It is a super-2 number, since 2×3890431² = 30270906731522, which contains 22 as substring.

Together with 3890429, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3890431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3891431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945215 + 1945216.

It is an arithmetic number, because the mean of its divisors is an integer number (1945216).

Almost surely, 2^3890431 is an apocalyptic number.

3890431 is a deficient number, since it is larger than the sum of its proper divisors (1).

3890431 is an equidigital number, since it uses as much as digits as its factorization.

3890431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 3890431 is about 1972.4175521425. The cubic root of 3890431 is about 157.2772495730.

The spelling of 3890431 in words is "three million, eight hundred ninety thousand, four hundred thirty-one".