40370689 has 2 divisors, whose sum is σ = 40370690. Its totient is φ = 40370688.

The previous prime is 40370677. The next prime is 40370717. The reversal of 40370689 is 98607304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 19210689 = 4600^2 + 4383^2 .

It is a cyclic number.

It is not a de Polignac number, because 40370689 - 2⁹ = 40370177 is a prime.

It is equal to p_2454895 and since 40370689 and 2454895 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (40370669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20185344 + 20185345.

It is an arithmetic number, because the mean of its divisors is an integer number (20185345).

Almost surely, 2^40370689 is an apocalyptic number.

It is an amenable number.

40370689 is a deficient number, since it is larger than the sum of its proper divisors (1).

40370689 is an equidigital number, since it uses as much as digits as its factorization.

40370689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 40370689 is about 6353.7932764609. The cubic root of 40370689 is about 343.0483913739.

The spelling of 40370689 in words is "forty million, three hundred seventy thousand, six hundred eighty-nine".