402669607 has 4 divisors (see below), whose sum is σ = 404044200. Its totient is φ = 401295016.

The previous prime is 402669559. The next prime is 402669643. The reversal of 402669607 is 706966204.

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-402669607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402669607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402669697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686857 + ... + 687442.

It is an arithmetic number, because the mean of its divisors is an integer number (101011050).

Almost surely, 2^402669607 is an apocalyptic number.

402669607 is a deficient number, since it is larger than the sum of its proper divisors (1374593).

402669607 is a wasteful number, since it uses less digits than its factorization.

402669607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374592.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 402669607 is about 20066.6291887801. The cubic root of 402669607 is about 738.4418193238.

The spelling of 402669607 in words is "four hundred two million, six hundred sixty-nine thousand, six hundred seven".