102869491 has 2 divisors, whose sum is σ = 102869492. Its totient is φ = 102869490.

The previous prime is 102869471. The next prime is 102869521. The reversal of 102869491 is 194968201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102869491 - 2⁹ = 102868979 is a prime.

It is not a weakly prime, because it can be changed into another prime (102869411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51434745 + 51434746.

It is an arithmetic number, because the mean of its divisors is an integer number (51434746).

Almost surely, 2^102869491 is an apocalyptic number.

102869491 is a deficient number, since it is larger than the sum of its proper divisors (1).

102869491 is an equidigital number, since it uses as much as digits as its factorization.

102869491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 102869491 is about 10142.4598101250. The cubic root of 102869491 is about 468.5567481671.

The spelling of 102869491 in words is "one hundred two million, eight hundred sixty-nine thousand, four hundred ninety-one".