80249641 has 4 divisors (see below), whose sum is σ = 83016900. Its totient is φ = 77482384.

The previous prime is 80249621. The next prime is 80249671. The reversal of 80249641 is 14694208.

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 36966400 + 43283241 = 6080^2 + 6579^2 .

It is a cyclic number.

It is not a de Polignac number, because 80249641 - 2²¹ = 78152489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80249597 and 80249606.

It is not an unprimeable number, because it can be changed into a prime (80249621) 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, 1383586 + ... + 1383643.

It is an arithmetic number, because the mean of its divisors is an integer number (20754225).

Almost surely, 2^80249641 is an apocalyptic number.

It is an amenable number.

80249641 is a deficient number, since it is larger than the sum of its proper divisors (2767259).

80249641 is a wasteful number, since it uses less digits than its factorization.

80249641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767258.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 80249641 is about 8958.2163961360. The cubic root of 80249641 is about 431.3346686379.

The spelling of 80249641 in words is "eighty million, two hundred forty-nine thousand, six hundred forty-one".