80467981 has 4 divisors (see below), whose sum is σ = 87783264. Its totient is φ = 73152700.

The previous prime is 80467979. The next prime is 80467991. The reversal of 80467981 is 18976408.

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 a cyclic number.

It is not a de Polignac number, because 80467981 - 2¹ = 80467979 is a prime.

It is a super-2 number, since 2×80467981² = 12950191932432722, 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 (80467951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3657625 + ... + 3657646.

It is an arithmetic number, because the mean of its divisors is an integer number (21945816).

Almost surely, 2^80467981 is an apocalyptic number.

It is an amenable number.

80467981 is a deficient number, since it is larger than the sum of its proper divisors (7315283).

80467981 is a wasteful number, since it uses less digits than its factorization.

80467981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7315282.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 80467981 is about 8970.3946958871. The cubic root of 80467981 is about 431.7255004127.

The spelling of 80467981 in words is "eighty million, four hundred sixty-seven thousand, nine hundred eighty-one".