102993889 has 4 divisors (see below), whose sum is σ = 108414640. Its totient is φ = 97573140.

The previous prime is 102993883. The next prime is 102993899. The reversal of 102993889 is 988399201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988399201 = 89 ⋅11105609.

It is a cyclic number.

It is not a de Polignac number, because 102993889 - 2¹⁷ = 102862817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102993883) 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, 2710347 + ... + 2710384.

It is an arithmetic number, because the mean of its divisors is an integer number (27103660).

Almost surely, 2^102993889 is an apocalyptic number.

102993889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

102993889 is a deficient number, since it is larger than the sum of its proper divisors (5420751).

102993889 is an equidigital number, since it uses as much as digits as its factorization.

102993889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5420750.

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 102993889 is about 10148.5904932656. The cubic root of 102993889 is about 468.7455441591.

The spelling of 102993889 in words is "one hundred two million, nine hundred ninety-three thousand, eight hundred eighty-nine".