40873897 has 2 divisors, whose sum is σ = 40873898. Its totient is φ = 40873896.

The previous prime is 40873867. The next prime is 40873907. The reversal of 40873897 is 79837804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36917776 + 3956121 = 6076^2 + 1989^2 .

It is a cyclic number.

It is not a de Polignac number, because 40873897 - 2¹¹ = 40871849 is a prime.

It is not a weakly prime, because it can be changed into another prime (40873867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20436948 + 20436949.

It is an arithmetic number, because the mean of its divisors is an integer number (20436949).

Almost surely, 2^40873897 is an apocalyptic number.

It is an amenable number.

40873897 is a deficient number, since it is larger than the sum of its proper divisors (1).

40873897 is an equidigital number, since it uses as much as digits as its factorization.

40873897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 40873897 is about 6393.2696642641. The cubic root of 40873897 is about 344.4678402153.

It can be divided in two parts, 408 and 73897, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 40873897 in words is "forty million, eight hundred seventy-three thousand, eight hundred ninety-seven".