2398749 has 8 divisors (see below), whose sum is σ = 3301632. Its totient is φ = 1547520.

The previous prime is 2398699. The next prime is 2398777. The reversal of 2398749 is 9478932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2398749 - 2⁸ = 2398493 is a prime.

It is an Ulam number.

2398749 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2398749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2398789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12804 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (412704).

2^2398749 is an apocalyptic number.

It is an amenable number.

2398749 is a deficient number, since it is larger than the sum of its proper divisors (902883).

2398749 is a wasteful number, since it uses less digits than its factorization.

2398749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25827.

The product of its digits is 108864, while the sum is 42.

The square root of 2398749 is about 1548.7895273406. The cubic root of 2398749 is about 133.8633231783.

The spelling of 2398749 in words is "two million, three hundred ninety-eight thousand, seven hundred forty-nine".