20453699 has 4 divisors (see below), whose sum is σ = 23375664. Its totient is φ = 17531736.

The previous prime is 20453687. The next prime is 20453701. The reversal of 20453699 is 99635402.

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 20453699 - 2⁴ = 20453683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20453639) 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, 1460972 + ... + 1460985.

It is an arithmetic number, because the mean of its divisors is an integer number (5843916).

Almost surely, 2^20453699 is an apocalyptic number.

20453699 is a deficient number, since it is larger than the sum of its proper divisors (2921965).

20453699 is an equidigital number, since it uses as much as digits as its factorization.

20453699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921964.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 20453699 is about 4522.5765886273. The cubic root of 20453699 is about 273.4789813030.

The spelling of 20453699 in words is "twenty million, four hundred fifty-three thousand, six hundred ninety-nine".