82900409 has 2 divisors, whose sum is σ = 82900410. Its totient is φ = 82900408.

The previous prime is 82900399. The next prime is 82900429. The reversal of 82900409 is 90400928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71149225 + 11751184 = 8435^2 + 3428^2 .

It is a cyclic number.

It is not a de Polignac number, because 82900409 - 2¹² = 82896313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82900429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41450204 + 41450205.

It is an arithmetic number, because the mean of its divisors is an integer number (41450205).

Almost surely, 2^82900409 is an apocalyptic number.

It is an amenable number.

82900409 is a deficient number, since it is larger than the sum of its proper divisors (1).

82900409 is an equidigital number, since it uses as much as digits as its factorization.

82900409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 82900409 is about 9104.9661723699. The cubic root of 82900409 is about 436.0325302581.

The spelling of 82900409 in words is "eighty-two million, nine hundred thousand, four hundred nine".