82346989 has 4 divisors (see below), whose sum is σ = 82365760. Its totient is φ = 82328220.

The previous prime is 82346977. The next prime is 82347019. The reversal of 82346989 is 98964328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82346989 - 2¹³ = 82338797 is a prime.

It is a super-2 number, since 2×82346989² = 13562053194732242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82346939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102 + ... + 12880.

It is an arithmetic number, because the mean of its divisors is an integer number (20591440).

Almost surely, 2^82346989 is an apocalyptic number.

It is an amenable number.

82346989 is a deficient number, since it is larger than the sum of its proper divisors (18771).

82346989 is a wasteful number, since it uses less digits than its factorization.

82346989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18770.

The product of its digits is 746496, while the sum is 49.

The square root of 82346989 is about 9074.5241748535. The cubic root of 82346989 is about 435.0600859441.

The spelling of 82346989 in words is "eighty-two million, three hundred forty-six thousand, nine hundred eighty-nine".