4991027 has 4 divisors (see below), whose sum is σ = 5003640. Its totient is φ = 4978416.

The previous prime is 4991011. The next prime is 4991029. The reversal of 4991027 is 7201994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7201994 = 2 ⋅3600997.

It is a cyclic number.

It is not a de Polignac number, because 4991027 - 2⁴ = 4991011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4990984 and 4991002.

It is not an unprimeable number, because it can be changed into a prime (4991029) 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, 5693 + ... + 6510.

It is an arithmetic number, because the mean of its divisors is an integer number (1250910).

Almost surely, 2^4991027 is an apocalyptic number.

4991027 is a deficient number, since it is larger than the sum of its proper divisors (12613).

4991027 is a wasteful number, since it uses less digits than its factorization.

4991027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12612.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 4991027 is about 2234.0606527129. The cubic root of 4991027 is about 170.8952426551.

The spelling of 4991027 in words is "four million, nine hundred ninety-one thousand, twenty-seven".