4901998 has 4 divisors (see below), whose sum is σ = 7353000. Its totient is φ = 2450998.

The previous prime is 4901989. The next prime is 4902049. The reversal of 4901998 is 8991094.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 4901998.

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, 1225498 + ... + 1225501.

It is an arithmetic number, because the mean of its divisors is an integer number (1838250).

Almost surely, 2^4901998 is an apocalyptic number.

4901998 is a deficient number, since it is larger than the sum of its proper divisors (2451002).

4901998 is a wasteful number, since it uses less digits than its factorization.

4901998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451001.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 4901998 is about 2214.0456183196. The cubic root of 4901998 is about 169.8730078116.

The spelling of 4901998 in words is "four million, nine hundred one thousand, nine hundred ninety-eight".