402947383 has 4 divisors (see below), whose sum is σ = 424155160. Its totient is φ = 381739608.

The previous prime is 402947359. The next prime is 402947399. The reversal of 402947383 is 383749204.

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

It is a cyclic number.

It is not a de Polignac number, because 402947383 - 2⁵ = 402947351 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 (402947183) 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, 10603860 + ... + 10603897.

It is an arithmetic number, because the mean of its divisors is an integer number (106038790).

Almost surely, 2^402947383 is an apocalyptic number.

402947383 is a deficient number, since it is larger than the sum of its proper divisors (21207777).

402947383 is a wasteful number, since it uses less digits than its factorization.

402947383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21207776.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 402947383 is about 20073.5493373743. The cubic root of 402947383 is about 738.6115815495.

The spelling of 402947383 in words is "four hundred two million, nine hundred forty-seven thousand, three hundred eighty-three".