40170803 has 2 divisors, whose sum is σ = 40170804. Its totient is φ = 40170802.

The previous prime is 40170791. The next prime is 40170869. The reversal of 40170803 is 30807104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40170803 - 2¹⁶ = 40105267 is a prime.

It is a super-2 number, since 2×40170803² = 3227386827329618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40170703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20085401 + 20085402.

It is an arithmetic number, because the mean of its divisors is an integer number (20085402).

Almost surely, 2^40170803 is an apocalyptic number.

40170803 is a deficient number, since it is larger than the sum of its proper divisors (1).

40170803 is an equidigital number, since it uses as much as digits as its factorization.

40170803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 40170803 is about 6338.0440989315. The cubic root of 40170803 is about 342.4812798122.

Adding to 40170803 its reverse (30807104), we get a palindrome (70977907).

The spelling of 40170803 in words is "forty million, one hundred seventy thousand, eight hundred three".