80990469 has 32 divisors (see below), whose sum is σ = 137975040. Its totient is φ = 45994176.

The previous prime is 80990453. The next prime is 80990473. The reversal of 80990469 is 96409908.

It is not a de Polignac number, because 80990469 - 2⁴ = 80990453 is a prime.

It is a super-2 number, since 2×80990469² = 13118912137679922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80990419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31459 + ... + 33935.

It is an arithmetic number, because the mean of its divisors is an integer number (4311720).

Almost surely, 2^80990469 is an apocalyptic number.

It is an amenable number.

80990469 is a deficient number, since it is larger than the sum of its proper divisors (56984571).

80990469 is a wasteful number, since it uses less digits than its factorization.

80990469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 80990469 is about 8999.4704844230. The cubic root of 80990469 is about 432.6578999566.

The spelling of 80990469 in words is "eighty million, nine hundred ninety thousand, four hundred sixty-nine".