4000204451 has 4 divisors (see below), whose sum is σ = 4085315232. Its totient is φ = 3915093672.

The previous prime is 4000204441. The next prime is 4000204457. The reversal of 4000204451 is 1544020004.

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 4000204451 - 2²⁶ = 3933095587 is a prime.

It is a super-2 number, since 2×4000204451² = 32003271299600422802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000204457) 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, 42555320 + ... + 42555413.

It is an arithmetic number, because the mean of its divisors is an integer number (1021328808).

Almost surely, 2^4000204451 is an apocalyptic number.

4000204451 is a deficient number, since it is larger than the sum of its proper divisors (85110781).

4000204451 is an equidigital number, since it uses as much as digits as its factorization.

4000204451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85110780.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 4000204451 is about 63247.1695097891. The cubic root of 4000204451 is about 1587.4280969851.

Adding to 4000204451 its reverse (1544020004), we get a palindrome (5544224455).

The spelling of 4000204451 in words is "four billion, two hundred four thousand, four hundred fifty-one".