82154039 has 6 divisors (see below), whose sum is σ = 90301680. Its totient is φ = 74685380.

The previous prime is 82154027. The next prime is 82154069. The reversal of 82154039 is 93045128.

It is not a de Polignac number, because 82154039 - 2¹² = 82149943 is a prime.

It is a super-2 number, since 2×82154039² = 13498572248027042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82153996 and 82154014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82154069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339359 + ... + 339600.

It is an arithmetic number, because the mean of its divisors is an integer number (15050280).

Almost surely, 2^82154039 is an apocalyptic number.

82154039 is a deficient number, since it is larger than the sum of its proper divisors (8147641).

82154039 is a wasteful number, since it uses less digits than its factorization.

82154039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678981 (or 678970 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 82154039 is about 9063.8865284159. The cubic root of 82154039 is about 434.7200188907.

The spelling of 82154039 in words is "eighty-two million, one hundred fifty-four thousand, thirty-nine".