82498421 has 2 divisors, whose sum is σ = 82498422. Its totient is φ = 82498420.

The previous prime is 82498393. The next prime is 82498457. The reversal of 82498421 is 12489428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69639025 + 12859396 = 8345^2 + 3586^2 .

It is a cyclic number.

It is not a de Polignac number, because 82498421 - 2¹⁸ = 82236277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82498321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41249210 + 41249211.

It is an arithmetic number, because the mean of its divisors is an integer number (41249211).

Almost surely, 2^82498421 is an apocalyptic number.

It is an amenable number.

82498421 is a deficient number, since it is larger than the sum of its proper divisors (1).

82498421 is an equidigital number, since it uses as much as digits as its factorization.

82498421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 38.

The square root of 82498421 is about 9082.8641407873. The cubic root of 82498421 is about 435.3266072274.

The spelling of 82498421 in words is "eighty-two million, four hundred ninety-eight thousand, four hundred twenty-one".