80199381 has 4 divisors (see below), whose sum is σ = 106932512. Its totient is φ = 53466252.

The previous prime is 80199359. The next prime is 80199407. The reversal of 80199381 is 18399108.

It is a happy number.

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 not a de Polignac number, because 80199381 - 2⁷ = 80199253 is a prime.

It is a super-2 number, since 2×80199381² = 12863881425566322, 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 (80199341) 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 3 ways as a sum of consecutive naturals, for example, 13366561 + ... + 13366566.

It is an arithmetic number, because the mean of its divisors is an integer number (26733128).

Almost surely, 2^80199381 is an apocalyptic number.

It is an amenable number.

80199381 is a deficient number, since it is larger than the sum of its proper divisors (26733131).

80199381 is a wasteful number, since it uses less digits than its factorization.

80199381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26733130.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 80199381 is about 8955.4107108496. The cubic root of 80199381 is about 431.2446021589.

The spelling of 80199381 in words is "eighty million, one hundred ninety-nine thousand, three hundred eighty-one".