40898785 has 4 divisors (see below), whose sum is σ = 49078548. Its totient is φ = 32719024.

The previous prime is 40898783. The next prime is 40898833. The reversal of 40898785 is 58789804.

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 24770529 + 16128256 = 4977^2 + 4016^2 .

It is a cyclic number.

It is not a de Polignac number, because 40898785 - 2¹ = 40898783 is a prime.

It is a super-2 number, since 2×40898785² = 3345421228952450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40898783) 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, 4089874 + ... + 4089883.

It is an arithmetic number, because the mean of its divisors is an integer number (12269637).

Almost surely, 2^40898785 is an apocalyptic number.

It is an amenable number.

40898785 is a deficient number, since it is larger than the sum of its proper divisors (8179763).

40898785 is an equidigital number, since it uses as much as digits as its factorization.

40898785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8179762.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 40898785 is about 6395.2157899480. The cubic root of 40898785 is about 344.5377411935.

The spelling of 40898785 in words is "forty million, eight hundred ninety-eight thousand, seven hundred eighty-five".