4991626 has 4 divisors (see below), whose sum is σ = 7487442. Its totient is φ = 2495812.

The previous prime is 4991617. The next prime is 4991647. The reversal of 4991626 is 6261994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6261994 = 2 ⋅3130997.

It can be written as a sum of positive squares in only one way, i.e., 4835601 + 156025 = 2199^2 + 395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1247905 + ... + 1247908.

Almost surely, 2^4991626 is an apocalyptic number.

4991626 is a deficient number, since it is larger than the sum of its proper divisors (2495816).

4991626 is a wasteful number, since it uses less digits than its factorization.

4991626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495815.

The product of its digits is 23328, while the sum is 37.

The square root of 4991626 is about 2234.1947095094. The cubic root of 4991626 is about 170.9020790674.

The spelling of 4991626 in words is "four million, nine hundred ninety-one thousand, six hundred twenty-six".