402022407 has 4 divisors (see below), whose sum is σ = 536029880. Its totient is φ = 268014936.

The previous prime is 402022403. The next prime is 402022429. The reversal of 402022407 is 704220204.

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

It is not a de Polignac number, because 402022407 - 2² = 402022403 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 (402022403) 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, 67003732 + ... + 67003737.

It is an arithmetic number, because the mean of its divisors is an integer number (134007470).

Almost surely, 2^402022407 is an apocalyptic number.

402022407 is a deficient number, since it is larger than the sum of its proper divisors (134007473).

402022407 is a wasteful number, since it uses less digits than its factorization.

402022407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134007472.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 402022407 is about 20050.4964277696. The cubic root of 402022407 is about 738.0459813009.

The spelling of 402022407 in words is "four hundred two million, twenty-two thousand, four hundred seven".