919623423 has 4 divisors (see below), whose sum is σ = 1226164568. Its totient is φ = 613082280.

The previous prime is 919623403. The next prime is 919623433. The reversal of 919623423 is 324326919.

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

It is not a de Polignac number, because 919623423 - 2¹³ = 919615231 is a prime.

It is a super-3 number, since 3×919623423³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919623403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153270568 + ... + 153270573.

It is an arithmetic number, because the mean of its divisors is an integer number (306541142).

Almost surely, 2^919623423 is an apocalyptic number.

919623423 is a deficient number, since it is larger than the sum of its proper divisors (306541145).

919623423 is a wasteful number, since it uses less digits than its factorization.

919623423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306541144.

The product of its digits is 69984, while the sum is 39.

The square root of 919623423 is about 30325.2934528258. The cubic root of 919623423 is about 972.4561071732.

It can be divided in two parts, 919623 and 423, that added together give a triangular number (920046 = T₁₃₅₆).

The spelling of 919623423 in words is "nine hundred nineteen million, six hundred twenty-three thousand, four hundred twenty-three".