851382099 has 48 divisors (see below), whose sum is σ = 1333800000. Its totient is φ = 521883648.

The previous prime is 851382073. The next prime is 851382107. The reversal of 851382099 is 990283158.

It is a happy number.

It is not a de Polignac number, because 851382099 - 2¹¹ = 851380051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (851382019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 681027 + ... + 682275.

It is an arithmetic number, because the mean of its divisors is an integer number (27787500).

Almost surely, 2^851382099 is an apocalyptic number.

851382099 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

851382099 is a deficient number, since it is larger than the sum of its proper divisors (482417901).

851382099 is a wasteful number, since it uses less digits than its factorization.

851382099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404 (or 1401 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 851382099 is about 29178.4526491725. The cubic root of 851382099 is about 947.7813781772.

The spelling of 851382099 in words is "eight hundred fifty-one million, three hundred eighty-two thousand, ninety-nine".