102488749 has 4 divisors (see below), whose sum is σ = 111805920. Its totient is φ = 93171580.

The previous prime is 102488747. The next prime is 102488753. The reversal of 102488749 is 947884201.

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 102488749 - 2¹ = 102488747 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 (102488747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4658569 + ... + 4658590.

It is an arithmetic number, because the mean of its divisors is an integer number (27951480).

Almost surely, 2^102488749 is an apocalyptic number.

It is an amenable number.

102488749 is a deficient number, since it is larger than the sum of its proper divisors (9317171).

102488749 is an equidigital number, since it uses as much as digits as its factorization.

102488749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9317170.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 102488749 is about 10123.6727031251. The cubic root of 102488749 is about 467.9779572373.

The spelling of 102488749 in words is "one hundred two million, four hundred eighty-eight thousand, seven hundred forty-nine".