102973839 has 4 divisors (see below), whose sum is σ = 137298456. Its totient is φ = 68649224.

The previous prime is 102973823. The next prime is 102973853. The reversal of 102973839 is 938379201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102973839 - 2⁴ = 102973823 is a prime.

It is a super-2 number, since 2×102973839² = 21207223036795842, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102973839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102973889) 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, 17162304 + ... + 17162309.

It is an arithmetic number, because the mean of its divisors is an integer number (34324614).

Almost surely, 2^102973839 is an apocalyptic number.

102973839 is a deficient number, since it is larger than the sum of its proper divisors (34324617).

102973839 is an equidigital number, since it uses as much as digits as its factorization.

102973839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34324616.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 102973839 is about 10147.6026232800. The cubic root of 102973839 is about 468.7151250143.

The spelling of 102973839 in words is "one hundred two million, nine hundred seventy-three thousand, eight hundred thirty-nine".