10458991 has 4 divisors (see below), whose sum is σ = 10535472. Its totient is φ = 10382512.

The previous prime is 10458983. The next prime is 10459021. The reversal of 10458991 is 19985401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10458991 - 2³ = 10458983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10458991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10458971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38035 + ... + 38308.

It is an arithmetic number, because the mean of its divisors is an integer number (2633868).

Almost surely, 2^10458991 is an apocalyptic number.

10458991 is a deficient number, since it is larger than the sum of its proper divisors (76481).

10458991 is an equidigital number, since it uses as much as digits as its factorization.

10458991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76480.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 10458991 is about 3234.0363325108. The cubic root of 10458991 is about 218.6905061610.

It can be divided in two parts, 10458 and 991, that added together give a square (11449 = 107²).

The spelling of 10458991 in words is "ten million, four hundred fifty-eight thousand, nine hundred ninety-one".