82391001 has 64 divisors (see below), whose sum is σ = 145152000. Its totient is φ = 41160000.

The previous prime is 82390981. The next prime is 82391003. The reversal of 82391001 is 10019328.

It is not a de Polignac number, because 82391001 - 2¹⁵ = 82358233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82391003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 328126 + ... + 328376.

It is an arithmetic number, because the mean of its divisors is an integer number (2268000).

Almost surely, 2^82391001 is an apocalyptic number.

It is an amenable number.

82391001 is a deficient number, since it is larger than the sum of its proper divisors (62760999).

82391001 is a wasteful number, since it uses less digits than its factorization.

82391001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 82391001 is about 9076.9488816452. The cubic root of 82391001 is about 435.1375810026.

The spelling of 82391001 in words is "eighty-two million, three hundred ninety-one thousand, one".