80140961 has 4 divisors (see below), whose sum is σ = 80166912. Its totient is φ = 80115012.

The previous prime is 80140913. The next prime is 80140981. The reversal of 80140961 is 16904108.

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 80140961 - 2¹⁰ = 80139937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80140981) 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, 7601 + ... + 14766.

It is an arithmetic number, because the mean of its divisors is an integer number (20041728).

Almost surely, 2^80140961 is an apocalyptic number.

It is an amenable number.

80140961 is a deficient number, since it is larger than the sum of its proper divisors (25951).

80140961 is a wasteful number, since it uses less digits than its factorization.

80140961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25950.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 80140961 is about 8952.1484013615. The cubic root of 80140961 is about 431.1398655676.

The spelling of 80140961 in words is "eighty million, one hundred forty thousand, nine hundred sixty-one".