102939849 has 8 divisors (see below), whose sum is σ = 152503520. Its totient is φ = 68626548.

The previous prime is 102939841. The next prime is 102939877. The reversal of 102939849 is 948939201.

It is not a de Polignac number, because 102939849 - 2³ = 102939841 is a prime.

It is a super-2 number, since 2×102939849² = 21193225024285602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102939841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1906267 + ... + 1906320.

It is an arithmetic number, because the mean of its divisors is an integer number (19062940).

Almost surely, 2^102939849 is an apocalyptic number.

It is an amenable number.

102939849 is a deficient number, since it is larger than the sum of its proper divisors (49563671).

102939849 is an equidigital number, since it uses as much as digits as its factorization.

102939849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812596 (or 3812590 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 102939849 is about 10145.9277052421. The cubic root of 102939849 is about 468.6635475764.

The spelling of 102939849 in words is "one hundred two million, nine hundred thirty-nine thousand, eight hundred forty-nine".