381539079 has 40 divisors (see below), whose sum is σ = 595238688. Its totient is φ = 243311040.

The previous prime is 381539063. The next prime is 381539083. The reversal of 381539079 is 970935183.

It is a happy number.

It is not a de Polignac number, because 381539079 - 2⁴ = 381539063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381539009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 181774 + ... + 183860.

Almost surely, 2^381539079 is an apocalyptic number.

381539079 is a deficient number, since it is larger than the sum of its proper divisors (213699609).

381539079 is a wasteful number, since it uses less digits than its factorization.

381539079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 381539079 is about 19533.0253417129. The cubic root of 381539079 is about 725.2922034197.

The spelling of 381539079 in words is "three hundred eighty-one million, five hundred thirty-nine thousand, seventy-nine".