4991402 has 8 divisors (see below), whose sum is σ = 8063076. Its totient is φ = 2303712.

The previous prime is 4991401. The next prime is 4991407. The reversal of 4991402 is 2041994.

It can be written as a sum of positive squares in 2 ways, for example, as 4541161 + 450241 = 2131^2 + 671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4991401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95963 + ... + 96014.

Almost surely, 2^4991402 is an apocalyptic number.

4991402 is a deficient number, since it is larger than the sum of its proper divisors (3071674).

4991402 is a wasteful number, since it uses less digits than its factorization.

4991402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191992.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 4991402 is about 2234.1445790280. The cubic root of 4991402 is about 170.8995226100.

Adding to 4991402 its product of nonzero digits (2592), we get a palindrome (4993994).

The spelling of 4991402 in words is "four million, nine hundred ninety-one thousand, four hundred two".