102386649 has 16 divisors (see below), whose sum is σ = 144193280. Its totient is φ = 64443600.

The previous prime is 102386623. The next prime is 102386651. The reversal of 102386649 is 946683201.

It is not a de Polignac number, because 102386649 - 2¹⁹ = 101862361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102386749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14574 + ... + 20424.

It is an arithmetic number, because the mean of its divisors is an integer number (9012080).

Almost surely, 2^102386649 is an apocalyptic number.

102386649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

102386649 is a deficient number, since it is larger than the sum of its proper divisors (41806631).

102386649 is a wasteful number, since it uses less digits than its factorization.

102386649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 102386649 is about 10118.6288102687. The cubic root of 102386649 is about 467.8225046466.

The spelling of 102386649 in words is "one hundred two million, three hundred eighty-six thousand, six hundred forty-nine".