402449423 has 8 divisors (see below), whose sum is σ = 423156096. Its totient is φ = 382010200.

The previous prime is 402449417. The next prime is 402449491. The reversal of 402449423 is 324944204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402449423 - 2²⁴ = 385672207 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 402449423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402449413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63773 + ... + 69798.

It is an arithmetic number, because the mean of its divisors is an integer number (52894512).

Almost surely, 2^402449423 is an apocalyptic number.

402449423 is a deficient number, since it is larger than the sum of its proper divisors (20706673).

402449423 is a wasteful number, since it uses less digits than its factorization.

402449423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133725.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 402449423 is about 20061.1421160412. The cubic root of 402449423 is about 738.3071988512.

The spelling of 402449423 in words is "four hundred two million, four hundred forty-nine thousand, four hundred twenty-three".