4991477 has 4 divisors (see below), whose sum is σ = 5010720. Its totient is φ = 4972236.

The previous prime is 4991473. The next prime is 4991479. The reversal of 4991477 is 7741994.

It is a happy number.

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 4991477 - 2² = 4991473 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 (4991473) 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, 9227 + ... + 9752.

It is an arithmetic number, because the mean of its divisors is an integer number (1252680).

Almost surely, 2^4991477 is an apocalyptic number.

It is an amenable number.

4991477 is a deficient number, since it is larger than the sum of its proper divisors (19243).

4991477 is a wasteful number, since it uses less digits than its factorization.

4991477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19242.

The product of its digits is 63504, while the sum is 41.

The square root of 4991477 is about 2234.1613639126. The cubic root of 4991477 is about 170.9003785753.

It can be divided in two parts, 49914 and 77, that multiplied together give a triangular number (3843378 = T₂₇₇₂).

The spelling of 4991477 in words is "four million, nine hundred ninety-one thousand, four hundred seventy-seven".