40610389 has 2 divisors, whose sum is σ = 40610390. Its totient is φ = 40610388.

The previous prime is 40610371. The next prime is 40610413. The reversal of 40610389 is 98301604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40576900 + 33489 = 6370^2 + 183^2 .

It is a cyclic number.

It is not a de Polignac number, because 40610389 - 2⁵ = 40610357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40610389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40610359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20305194 + 20305195.

It is an arithmetic number, because the mean of its divisors is an integer number (20305195).

Almost surely, 2^40610389 is an apocalyptic number.

It is an amenable number.

40610389 is a deficient number, since it is larger than the sum of its proper divisors (1).

40610389 is an equidigital number, since it uses as much as digits as its factorization.

40610389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 40610389 is about 6372.6281077747. The cubic root of 40610389 is about 343.7259992499.

The spelling of 40610389 in words is "forty million, six hundred ten thousand, three hundred eighty-nine".