381069 has 12 divisors (see below), whose sum is σ = 592956. Its totient is φ = 234432.

The previous prime is 381061. The next prime is 381071. The reversal of 381069 is 960183.

It can be written as a sum of positive squares in 2 ways, for example, as 191844 + 189225 = 438^2 + 435^2 .

It is not a de Polignac number, because 381069 - 2³ = 381061 is a prime.

It is a super-2 number, since 2×381069² = 290427165522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

381069 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1512 + ... + 1745.

It is an arithmetic number, because the mean of its divisors is an integer number (49413).

2³⁸¹⁰⁶⁹ is an apocalyptic number.

381069 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

381069 is a deficient number, since it is larger than the sum of its proper divisors (211887).

381069 is a wasteful number, since it uses less digits than its factorization.

381069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276 (or 3273 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 381069 is about 617.3078648454. The cubic root of 381069 is about 72.4994213192.

The spelling of 381069 in words is "three hundred eighty-one thousand, sixty-nine".