4002007 has 4 divisors (see below), whose sum is σ = 4131136. Its totient is φ = 3872880.

The previous prime is 4002001. The next prime is 4002013. The reversal of 4002007 is 7002004.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4002001) and next prime (4002013).

It is a cyclic number.

It is not a de Polignac number, because 4002007 - 2³ = 4001999 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 (4002001) 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, 64518 + ... + 64579.

It is an arithmetic number, because the mean of its divisors is an integer number (1032784).

Almost surely, 2^4002007 is an apocalyptic number.

4002007 is a deficient number, since it is larger than the sum of its proper divisors (129129).

4002007 is a wasteful number, since it uses less digits than its factorization.

4002007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129128.

The product of its (nonzero) digits is 56, while the sum is 13.

The square root of 4002007 is about 2000.5016870775. The cubic root of 4002007 is about 158.7666500403.

The spelling of 4002007 in words is "four million, two thousand, seven".