4991437 has 16 divisors (see below), whose sum is σ = 5765760. Its totient is φ = 4276800.

The previous prime is 4991431. The next prime is 4991449. The reversal of 4991437 is 7341994.

It is not a de Polignac number, because 4991437 - 2³ = 4991429 is a prime.

Its product of digits (27216) is a multiple of the sum of its prime divisors (324).

It is a junction number, because it is equal to n+sod(n) for n = 4991396 and 4991405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27487 + ... + 27667.

It is an arithmetic number, because the mean of its divisors is an integer number (360360).

Almost surely, 2^4991437 is an apocalyptic number.

It is an amenable number.

4991437 is a deficient number, since it is larger than the sum of its proper divisors (774323).

4991437 is a wasteful number, since it uses less digits than its factorization.

4991437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324.

The product of its digits is 27216, while the sum is 37.

The square root of 4991437 is about 2234.1524119898. The cubic root of 4991437 is about 170.8999220615.

It can be divided in two parts, 499 and 1437, that added together give a square (1936 = 44²).

The spelling of 4991437 in words is "four million, nine hundred ninety-one thousand, four hundred thirty-seven".