10453991 has 4 divisors (see below), whose sum is σ = 10586400. Its totient is φ = 10321584.

The previous prime is 10453979. The next prime is 10453999. The reversal of 10453991 is 19935401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19935401 = 733 ⋅27197.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10453991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10453999) 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, 66086 + ... + 66243.

It is an arithmetic number, because the mean of its divisors is an integer number (2646600).

Almost surely, 2^10453991 is an apocalyptic number.

10453991 is a deficient number, since it is larger than the sum of its proper divisors (132409).

10453991 is an equidigital number, since it uses as much as digits as its factorization.

10453991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132408.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 10453991 is about 3233.2632122981. The cubic root of 10453991 is about 218.6556517210.

The spelling of 10453991 in words is "ten million, four hundred fifty-three thousand, nine hundred ninety-one".