2399145 has 32 divisors (see below), whose sum is σ = 4461312. Its totient is φ = 1078272.

The previous prime is 2399143. The next prime is 2399167. The reversal of 2399145 is 5419932.

2399145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2399145 is a nontrivial binomial coefficient, being equal to C(2191, 2).

It is not a de Polignac number, because 2399145 - 2¹ = 2399143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7509 + ... + 7821.

It is an arithmetic number, because the mean of its divisors is an integer number (139416).

2^2399145 is an apocalyptic number.

2399145 is the 2190-th triangular number.

It is an amenable number.

2399145 is a deficient number, since it is larger than the sum of its proper divisors (2062167).

2399145 is a wasteful number, since it uses less digits than its factorization.

2399145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401.

The product of its digits is 9720, while the sum is 33.

The square root of 2399145 is about 1548.9173638384. The cubic root of 2399145 is about 133.8706890955.

The spelling of 2399145 in words is "two million, three hundred ninety-nine thousand, one hundred forty-five".