102993389 has 2 divisors, whose sum is σ = 102993390. Its totient is φ = 102993388.

The previous prime is 102993383. The next prime is 102993427. The reversal of 102993389 is 983399201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102860164 + 133225 = 10142^2 + 365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102993389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102993383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51496694 + 51496695.

It is an arithmetic number, because the mean of its divisors is an integer number (51496695).

Almost surely, 2^102993389 is an apocalyptic number.

It is an amenable number.

102993389 is a deficient number, since it is larger than the sum of its proper divisors (1).

102993389 is an equidigital number, since it uses as much as digits as its factorization.

102993389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 102993389 is about 10148.5658592729. The cubic root of 102993389 is about 468.7447856250.

The spelling of 102993389 in words is "one hundred two million, nine hundred ninety-three thousand, three hundred eighty-nine".