83894431 has 2 divisors, whose sum is σ = 83894432. Its totient is φ = 83894430.

The previous prime is 83894411. The next prime is 83894449. The reversal of 83894431 is 13449838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83894431 - 2⁵ = 83894399 is a prime.

It is a super-2 number, since 2×83894431² = 14076551105627522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83894411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41947215 + 41947216.

It is an arithmetic number, because the mean of its divisors is an integer number (41947216).

Almost surely, 2^83894431 is an apocalyptic number.

83894431 is a deficient number, since it is larger than the sum of its proper divisors (1).

83894431 is an equidigital number, since it uses as much as digits as its factorization.

83894431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 83894431 is about 9159.3903181380. The cubic root of 83894431 is about 437.7683682437.

The spelling of 83894431 in words is "eighty-three million, eight hundred ninety-four thousand, four hundred thirty-one".