4399958 has 4 divisors (see below), whose sum is σ = 6599940. Its totient is φ = 2199978.

The previous prime is 4399943. The next prime is 4399961. The reversal of 4399958 is 8599934.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099988 + ... + 1099991.

It is an arithmetic number, because the mean of its divisors is an integer number (1649985).

Almost surely, 2^4399958 is an apocalyptic number.

4399958 is a deficient number, since it is larger than the sum of its proper divisors (2199982).

4399958 is a wasteful number, since it uses less digits than its factorization.

4399958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199981.

The product of its digits is 349920, while the sum is 47.

The square root of 4399958 is about 2097.6076849592. The cubic root of 4399958 is about 163.8637327322.

It can be divided in two parts, 43 and 99958, that added together give a palindrome (100001).

The spelling of 4399958 in words is "four million, three hundred ninety-nine thousand, nine hundred fifty-eight".