4001400209 has 4 divisors (see below), whose sum is σ = 4212000240. Its totient is φ = 3790800180.

The previous prime is 4001400107. The next prime is 4001400257. The reversal of 4001400209 is 9020041004.

4001400209 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4001400209 is a prime.

It is a super-2 number, since 2×4001400209² = 32022407265170487362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001400259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105299987 + ... + 105300024.

It is an arithmetic number, because the mean of its divisors is an integer number (1053000060).

Almost surely, 2^4001400209 is an apocalyptic number.

It is an amenable number.

4001400209 is a deficient number, since it is larger than the sum of its proper divisors (210600031).

4001400209 is a wasteful number, since it uses less digits than its factorization.

4001400209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210600030.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 4001400209 is about 63256.6218589011. The cubic root of 4001400209 is about 1587.5862547963.

The spelling of 4001400209 in words is "four billion, one million, four hundred thousand, two hundred nine".