4002452009 has 2 divisors, whose sum is σ = 4002452010. Its totient is φ = 4002452008.

The previous prime is 4002451919. The next prime is 4002452033. The reversal of 4002452009 is 9002542004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3988554025 + 13897984 = 63155^2 + 3728^2 .

It is a cyclic number.

It is not a de Polignac number, because 4002452009 - 2²⁴ = 3985674793 is a prime.

It is not a weakly prime, because it can be changed into another prime (4002452099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001226004 + 2001226005.

It is an arithmetic number, because the mean of its divisors is an integer number (2001226005).

Almost surely, 2^4002452009 is an apocalyptic number.

It is an amenable number.

4002452009 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002452009 is an equidigital number, since it uses as much as digits as its factorization.

4002452009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4002452009 is about 63264.9350667493. The cubic root of 4002452009 is about 1587.7253458518.

The spelling of 4002452009 in words is "four billion, two million, four hundred fifty-two thousand, nine".