83249381 has 2 divisors, whose sum is σ = 83249382. Its totient is φ = 83249380.

The previous prime is 83249363. The next prime is 83249399. The reversal of 83249381 is 18394238.

It is a balanced prime because it is at equal distance from previous prime (83249363) and next prime (83249399).

It can be written as a sum of positive squares in only one way, i.e., 54626881 + 28622500 = 7391^2 + 5350^2 .

It is a cyclic number.

It is not a de Polignac number, because 83249381 - 2¹⁴ = 83232997 is a prime.

It is a super-2 number, since 2×83249381² = 13860918873766322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83249281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41624690 + 41624691.

It is an arithmetic number, because the mean of its divisors is an integer number (41624691).

Almost surely, 2^83249381 is an apocalyptic number.

It is an amenable number.

83249381 is a deficient number, since it is larger than the sum of its proper divisors (1).

83249381 is an equidigital number, since it uses as much as digits as its factorization.

83249381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 83249381 is about 9124.1098743932. The cubic root of 83249381 is about 436.6435048479.

The spelling of 83249381 in words is "eighty-three million, two hundred forty-nine thousand, three hundred eighty-one".