2439898 has 4 divisors (see below), whose sum is σ = 3659850. Its totient is φ = 1219948.

The previous prime is 2439893. The next prime is 2439901. The reversal of 2439898 is 8989342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8989342 = 2 ⋅4494671.

It can be written as a sum of positive squares in only one way, i.e., 2380849 + 59049 = 1543^2 + 243^2 .

It is not an unprimeable number, because it can be changed into a prime (2439893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609973 + ... + 609976.

2^2439898 is an apocalyptic number.

2439898 is a deficient number, since it is larger than the sum of its proper divisors (1219952).

2439898 is a wasteful number, since it uses less digits than its factorization.

2439898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219951.

The product of its digits is 124416, while the sum is 43.

The square root of 2439898 is about 1562.0172854357. The cubic root of 2439898 is about 134.6244339788.

The spelling of 2439898 in words is "two million, four hundred thirty-nine thousand, eight hundred ninety-eight".