4491961 has 8 divisors (see below), whose sum is σ = 5006880. Its totient is φ = 4004928.

The previous prime is 4491953. The next prime is 4491989. The reversal of 4491961 is 1691944.

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

It is not a de Polignac number, because 4491961 - 2³ = 4491953 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4491941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6631 + ... + 7276.

It is an arithmetic number, because the mean of its divisors is an integer number (625860).

Almost surely, 2^4491961 is an apocalyptic number.

It is an amenable number.

4491961 is a deficient number, since it is larger than the sum of its proper divisors (514919).

4491961 is a wasteful number, since it uses less digits than its factorization.

4491961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13943.

The product of its digits is 7776, while the sum is 34.

The square root of 4491961 is about 2119.4246860882. The cubic root of 4491961 is about 164.9979920172.

The spelling of 4491961 in words is "four million, four hundred ninety-one thousand, nine hundred sixty-one".