402007 has 4 divisors (see below), whose sum is σ = 411400. Its totient is φ = 392616.

The previous prime is 401993. The next prime is 402023. The reversal of 402007 is 700204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402007 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 (402037) 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, 4632 + ... + 4717.

It is an arithmetic number, because the mean of its divisors is an integer number (102850).

2⁴⁰²⁰⁰⁷ is an apocalyptic number.

402007 is a deficient number, since it is larger than the sum of its proper divisors (9393).

402007 is an equidigital number, since it uses as much as digits as its factorization.

402007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9392.

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

The square root of 402007 is about 634.0402195445. The cubic root of 402007 is about 73.8036552954.

The spelling of 402007 in words is "four hundred two thousand, seven", and thus it is an iban number.