4967991 has 12 divisors (see below), whose sum is σ = 8201232. Its totient is φ = 2838816.

The previous prime is 4967981. The next prime is 4967993. The reversal of 4967991 is 1997694.

4967991 is a `hidden beast` number, since 496 + 79 + 91 = 666.

It is not a de Polignac number, because 4967991 - 2¹¹ = 4965943 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4967993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39366 + ... + 39491.

It is an arithmetic number, because the mean of its divisors is an integer number (683436).

Almost surely, 2^4967991 is an apocalyptic number.

4967991 is a deficient number, since it is larger than the sum of its proper divisors (3233241).

4967991 is a wasteful number, since it uses less digits than its factorization.

4967991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78870 (or 78867 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 4967991 is about 2228.8990555878. The cubic root of 4967991 is about 170.6319157524.

It can be divided in two parts, 49679 and 91, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 4967991 in words is "four million, nine hundred sixty-seven thousand, nine hundred ninety-one".