4995981 has 6 divisors (see below), whose sum is σ = 7216430. Its totient is φ = 3330648.

The previous prime is 4995953. The next prime is 4995983. The reversal of 4995981 is 1895994.

It can be written as a sum of positive squares in only one way, i.e., 4862025 + 133956 = 2205^2 + 366^2 .

It is not a de Polignac number, because 4995981 - 2¹⁵ = 4963213 is a prime.

It is a super-2 number, since 2×4995981² = 49919652304722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4995983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277546 + ... + 277563.

Almost surely, 2^4995981 is an apocalyptic number.

It is an amenable number.

4995981 is a deficient number, since it is larger than the sum of its proper divisors (2220449).

4995981 is a wasteful number, since it uses less digits than its factorization.

4995981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555115 (or 555112 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 4995981 is about 2235.1691211181. The cubic root of 4995981 is about 170.9517664310.

The spelling of 4995981 in words is "four million, nine hundred ninety-five thousand, nine hundred eighty-one".