383778623 has 8 divisors (see below), whose sum is σ = 387631008. Its totient is φ = 379934464.

The previous prime is 383778607. The next prime is 383778683. The reversal of 383778623 is 326877383.

It is a happy number.

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 383778623 - 2⁴ = 383778607 is a prime.

It is a super-2 number, since 2×383778623² = 294572062943552258, which contains 22 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 (383778683) 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, 136811 + ... + 139587.

It is an arithmetic number, because the mean of its divisors is an integer number (48453876).

Almost surely, 2^383778623 is an apocalyptic number.

383778623 is a deficient number, since it is larger than the sum of its proper divisors (3852385).

383778623 is a wasteful number, since it uses less digits than its factorization.

383778623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113.

The product of its digits is 1016064, while the sum is 47.

The square root of 383778623 is about 19590.2685790675. The cubic root of 383778623 is about 726.7085336491.

The spelling of 383778623 in words is "three hundred eighty-three million, seven hundred seventy-eight thousand, six hundred twenty-three".