4991229 has 24 divisors (see below), whose sum is σ = 7480512. Its totient is φ = 3205440.

The previous prime is 4991201. The next prime is 4991237. The reversal of 4991229 is 9221994.

It is not a de Polignac number, because 4991229 - 2⁷ = 4991101 is a prime.

4991229 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4991193 and 4991202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46594 + ... + 46700.

It is an arithmetic number, because the mean of its divisors is an integer number (311688).

Almost surely, 2^4991229 is an apocalyptic number.

It is an amenable number.

4991229 is a deficient number, since it is larger than the sum of its proper divisors (2489283).

4991229 is a wasteful number, since it uses less digits than its factorization.

4991229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 254 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 4991229 is about 2234.1058614130. The cubic root of 4991229 is about 170.8975481508.

It can be divided in two parts, 499 and 1229, that added together give a cube (1728 = 12³).

The spelling of 4991229 in words is "four million, nine hundred ninety-one thousand, two hundred twenty-nine".