80392381 has 4 divisors (see below), whose sum is σ = 81103932. Its totient is φ = 79680832.

The previous prime is 80392373. The next prime is 80392391. The reversal of 80392381 is 18329308.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24651225 + 55741156 = 4965^2 + 7466^2 .

It is a cyclic number.

It is not a de Polignac number, because 80392381 - 2³ = 80392373 is a prime.

It is a super-2 number, since 2×80392381² = 12925869845698322, 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 (80392391) 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, 355606 + ... + 355831.

It is an arithmetic number, because the mean of its divisors is an integer number (20275983).

Almost surely, 2^80392381 is an apocalyptic number.

It is an amenable number.

80392381 is a deficient number, since it is larger than the sum of its proper divisors (711551).

80392381 is a wasteful number, since it uses less digits than its factorization.

80392381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711550.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 80392381 is about 8966.1798442815. The cubic root of 80392381 is about 431.5902554201.

The spelling of 80392381 in words is "eighty million, three hundred ninety-two thousand, three hundred eighty-one".