89471945 has 16 divisors (see below), whose sum is σ = 108697680. Its totient is φ = 70696704.

The previous prime is 89471929. The next prime is 89471951. The reversal of 89471945 is 54917498.

It can be written as a sum of positive squares in 8 ways, for example, as 150544 + 89321401 = 388^2 + 9451^2 .

It is a cyclic number.

It is not a de Polignac number, because 89471945 - 2⁴ = 89471929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89471945.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229811 + ... + 230199.

It is an arithmetic number, because the mean of its divisors is an integer number (6793605).

Almost surely, 2^89471945 is an apocalyptic number.

It is an amenable number.

89471945 is a deficient number, since it is larger than the sum of its proper divisors (19225735).

89471945 is a wasteful number, since it uses less digits than its factorization.

89471945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844.

The product of its digits is 362880, while the sum is 47.

The square root of 89471945 is about 9458.9610951732. The cubic root of 89471945 is about 447.2623000289.

The spelling of 89471945 in words is "eighty-nine million, four hundred seventy-one thousand, nine hundred forty-five".