102299791 has 32 divisors (see below), whose sum is σ = 122757120. Its totient is φ = 84268800.

The previous prime is 102299779. The next prime is 102299809. The reversal of 102299791 is 197992201.

It is a happy number.

It is not a de Polignac number, because 102299791 - 2¹⁹ = 101775503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102299891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 535506 + ... + 535696.

It is an arithmetic number, because the mean of its divisors is an integer number (3836160).

Almost surely, 2^102299791 is an apocalyptic number.

102299791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102299791 is a deficient number, since it is larger than the sum of its proper divisors (20457329).

102299791 is a wasteful number, since it uses less digits than its factorization.

102299791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 102299791 is about 10114.3359149279. The cubic root of 102299791 is about 467.6901774231.

The spelling of 102299791 in words is "one hundred two million, two hundred ninety-nine thousand, seven hundred ninety-one".