40052387 has 2 divisors, whose sum is σ = 40052388. Its totient is φ = 40052386.

The previous prime is 40052359. The next prime is 40052401. The reversal of 40052387 is 78325004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40052387 - 2¹² = 40048291 is a prime.

It is equal to p_2436626 and since 40052387 and 2436626 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 (40052317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20026193 + 20026194.

It is an arithmetic number, because the mean of its divisors is an integer number (20026194).

Almost surely, 2^40052387 is an apocalyptic number.

40052387 is a deficient number, since it is larger than the sum of its proper divisors (1).

40052387 is an equidigital number, since it uses as much as digits as its factorization.

40052387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 40052387 is about 6328.6955211955. The cubic root of 40052387 is about 342.1444250541.

The spelling of 40052387 in words is "forty million, fifty-two thousand, three hundred eighty-seven".