102912949 has 4 divisors (see below), whose sum is σ = 108329440. Its totient is φ = 97496460.

The previous prime is 102912923. The next prime is 102912961. The reversal of 102912949 is 949219201.

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.

It is a cyclic number.

It is not a de Polignac number, because 102912949 - 2¹⁵ = 102880181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102912919) 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 3 ways as a sum of consecutive naturals, for example, 2708217 + ... + 2708254.

It is an arithmetic number, because the mean of its divisors is an integer number (27082360).

Almost surely, 2^102912949 is an apocalyptic number.

102912949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

102912949 is a deficient number, since it is larger than the sum of its proper divisors (5416491).

102912949 is an equidigital number, since it uses as much as digits as its factorization.

102912949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5416490.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 102912949 is about 10144.6019636061. The cubic root of 102912949 is about 468.6227206668.

The spelling of 102912949 in words is "one hundred two million, nine hundred twelve thousand, nine hundred forty-nine".