4054991 has 4 divisors (see below), whose sum is σ = 4106400. Its totient is φ = 4003584.

The previous prime is 4054987. The next prime is 4054997. The reversal of 4054991 is 1994504.

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

It is a cyclic number.

It is not a de Polignac number, because 4054991 - 2² = 4054987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4054997) 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, 25586 + ... + 25743.

It is an arithmetic number, because the mean of its divisors is an integer number (1026600).

Almost surely, 2^4054991 is an apocalyptic number.

4054991 is a deficient number, since it is larger than the sum of its proper divisors (51409).

4054991 is an equidigital number, since it uses as much as digits as its factorization.

4054991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51408.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 4054991 is about 2013.7008218700. The cubic root of 4054991 is about 159.4642366334.

The spelling of 4054991 in words is "four million, fifty-four thousand, nine hundred ninety-one".