2399958 has 96 divisors (see below), whose sum is σ = 6469632. Its totient is φ = 633600.

The previous prime is 2399951. The next prime is 2399977. The reversal of 2399958 is 8599932.

It is an Ulam number.

Its product of digits (174960) is a multiple of the sum of its prime factors (90).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2399951) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77403 + ... + 77433.

It is an arithmetic number, because the mean of its divisors is an integer number (67392).

2^2399958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2399958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3234816).

2399958 is an abundant number, since it is smaller than the sum of its proper divisors (4069674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2399958 is a wasteful number, since it uses less digits than its factorization.

2399958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 87 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 2399958 is about 1549.1797829819. The cubic root of 2399958 is about 133.8858090068.

The spelling of 2399958 in words is "two million, three hundred ninety-nine thousand, nine hundred fifty-eight".