82919091 has 8 divisors (see below), whose sum is σ = 114371280. Its totient is φ = 53373152.

The previous prime is 82919063. The next prime is 82919101. The reversal of 82919091 is 19091928.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82919091 - 2⁶ = 82919027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82919041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476460 + ... + 476633.

It is an arithmetic number, because the mean of its divisors is an integer number (14296410).

Almost surely, 2^82919091 is an apocalyptic number.

82919091 is a deficient number, since it is larger than the sum of its proper divisors (31452189).

82919091 is a wasteful number, since it uses less digits than its factorization.

82919091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953125.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 82919091 is about 9105.9920382131. The cubic root of 82919091 is about 436.0652817969.

The spelling of 82919091 in words is "eighty-two million, nine hundred nineteen thousand, ninety-one".