2477891 has 4 divisors (see below), whose sum is σ = 2668512. Its totient is φ = 2287272.

The previous prime is 2477863. The next prime is 2477899. The reversal of 2477891 is 1987742.

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

It is not a de Polignac number, because 2477891 - 2¹⁰ = 2476867 is a prime.

It is a super-2 number, since 2×2477891² = 12279887615762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2477899) 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, 95291 + ... + 95316.

It is an arithmetic number, because the mean of its divisors is an integer number (667128).

2^2477891 is an apocalyptic number.

2477891 is a deficient number, since it is larger than the sum of its proper divisors (190621).

2477891 is a wasteful number, since it uses less digits than its factorization.

2477891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190620.

The product of its digits is 28224, while the sum is 38.

The square root of 2477891 is about 1574.1318242130. The cubic root of 2477891 is about 135.3196085369.

The spelling of 2477891 in words is "two million, four hundred seventy-seven thousand, eight hundred ninety-one".