4164981 has 4 divisors (see below), whose sum is σ = 5553312. Its totient is φ = 2776652.

The previous prime is 4164977. The next prime is 4164989. The reversal of 4164981 is 1894614.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4164981 - 2² = 4164977 is a prime.

It is a super-2 number, since 2×4164981² = 34694133460722, which contains 22 as substring.

It is a D-number.

4164981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4164989) 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, 694161 + ... + 694166.

It is an arithmetic number, because the mean of its divisors is an integer number (1388328).

Almost surely, 2^4164981 is an apocalyptic number.

It is an amenable number.

4164981 is a deficient number, since it is larger than the sum of its proper divisors (1388331).

4164981 is a wasteful number, since it uses less digits than its factorization.

4164981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388330.

The product of its digits is 6912, while the sum is 33.

The square root of 4164981 is about 2040.8285082289. The cubic root of 4164981 is about 160.8931945970.

The spelling of 4164981 in words is "four million, one hundred sixty-four thousand, nine hundred eighty-one".