383278069 has 4 divisors (see below), whose sum is σ = 383725120. Its totient is φ = 382831020.

The previous prime is 383278057. The next prime is 383278081. The reversal of 383278069 is 960872383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (383278057) and next prime (383278081).

It is a cyclic number.

It is not a de Polignac number, because 383278069 - 2¹¹ = 383276021 is a prime.

It is a super-2 number, since 2×383278069² = 293804156352737522, 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 (383278009) 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, 222237 + ... + 223954.

It is an arithmetic number, because the mean of its divisors is an integer number (95931280).

Almost surely, 2^383278069 is an apocalyptic number.

It is an amenable number.

383278069 is a deficient number, since it is larger than the sum of its proper divisors (447051).

383278069 is an equidigital number, since it uses as much as digits as its factorization.

383278069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447050.

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 383278069 is about 19577.4888328406. The cubic root of 383278069 is about 726.3924528819.

The spelling of 383278069 in words is "three hundred eighty-three million, two hundred seventy-eight thousand, sixty-nine".