4132991 has 4 divisors (see below), whose sum is σ = 4139184. Its totient is φ = 4126800.

The previous prime is 4132987. The next prime is 4133047. The reversal of 4132991 is 1992314.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1992314 = 2 ⋅996157.

It is a cyclic number.

It is not a de Polignac number, because 4132991 - 2² = 4132987 is a prime.

It is a super-2 number, since 2×4132991² = 34163229212162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4132901) 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, 1955 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (1034796).

Almost surely, 2^4132991 is an apocalyptic number.

4132991 is a deficient number, since it is larger than the sum of its proper divisors (6193).

4132991 is an equidigital number, since it uses as much as digits as its factorization.

4132991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192.

The product of its digits is 1944, while the sum is 29.

The square root of 4132991 is about 2032.9758975453. The cubic root of 4132991 is about 160.4802109380.

The spelling of 4132991 in words is "four million, one hundred thirty-two thousand, nine hundred ninety-one".