82440469 has 2 divisors, whose sum is σ = 82440470. Its totient is φ = 82440468.

The previous prime is 82440461. The next prime is 82440473. The reversal of 82440469 is 96404428.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82137969 + 302500 = 9063^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 82440469 - 2³ = 82440461 is a prime.

It is a super-2 number, since 2×82440469² = 13592861857879922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82440461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41220234 + 41220235.

It is an arithmetic number, because the mean of its divisors is an integer number (41220235).

Almost surely, 2^82440469 is an apocalyptic number.

It is an amenable number.

82440469 is a deficient number, since it is larger than the sum of its proper divisors (1).

82440469 is an equidigital number, since it uses as much as digits as its factorization.

82440469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 82440469 is about 9079.6733972098. The cubic root of 82440469 is about 435.2246498938.

The spelling of 82440469 in words is "eighty-two million, four hundred forty thousand, four hundred sixty-nine".