402326623 has 4 divisors (see below), whose sum is σ = 402387120. Its totient is φ = 402266128.

The previous prime is 402326621. The next prime is 402326651. The reversal of 402326623 is 326623204.

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 402326623 - 2¹ = 402326621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402326591 and 402326600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402326621) 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, 18838 + ... + 34051.

It is an arithmetic number, because the mean of its divisors is an integer number (100596780).

Almost surely, 2^402326623 is an apocalyptic number.

402326623 is a deficient number, since it is larger than the sum of its proper divisors (60497).

402326623 is an equidigital number, since it uses as much as digits as its factorization.

402326623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60496.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 402326623 is about 20058.0812392412. The cubic root of 402326623 is about 738.2320976154.

Adding to 402326623 its reverse (326623204), we get a palindrome (728949827).

The spelling of 402326623 in words is "four hundred two million, three hundred twenty-six thousand, six hundred twenty-three".