4891958 has 4 divisors (see below), whose sum is σ = 7337940. Its totient is φ = 2445978.

The previous prime is 4891927. The next prime is 4891961. The reversal of 4891958 is 8591984.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1222988 + ... + 1222991.

It is an arithmetic number, because the mean of its divisors is an integer number (1834485).

Almost surely, 2^4891958 is an apocalyptic number.

4891958 is a deficient number, since it is larger than the sum of its proper divisors (2445982).

4891958 is a wasteful number, since it uses less digits than its factorization.

4891958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445981.

The product of its digits is 103680, while the sum is 44.

The square root of 4891958 is about 2211.7771135447. Note that the first 3 decimals coincide. The cubic root of 4891958 is about 169.7569537243.

The spelling of 4891958 in words is "four million, eight hundred ninety-one thousand, nine hundred fifty-eight".