102798379 has 4 divisors (see below), whose sum is σ = 108208840. Its totient is φ = 97387920.

The previous prime is 102798373. The next prime is 102798383. The reversal of 102798379 is 973897201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973897201 = 107 ⋅9101843.

It is not a de Polignac number, because 102798379 - 2⁵ = 102798347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102798373) 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, 2705202 + ... + 2705239.

It is an arithmetic number, because the mean of its divisors is an integer number (27052210).

Almost surely, 2^102798379 is an apocalyptic number.

102798379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

102798379 is a deficient number, since it is larger than the sum of its proper divisors (5410461).

102798379 is an equidigital number, since it uses as much as digits as its factorization.

102798379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410460.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 102798379 is about 10138.9535456081. The cubic root of 102798379 is about 468.4487547346.

The spelling of 102798379 in words is "one hundred two million, seven hundred ninety-eight thousand, three hundred seventy-nine".