40384963 has 2 divisors, whose sum is σ = 40384964. Its totient is φ = 40384962.

The previous prime is 40384913. The next prime is 40384999. The reversal of 40384963 is 36948304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40384963 - 2²¹ = 38287811 is a prime.

It is a super-2 number, since 2×40384963² = 3261890473022738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40384913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20192481 + 20192482.

It is an arithmetic number, because the mean of its divisors is an integer number (20192482).

Almost surely, 2^40384963 is an apocalyptic number.

40384963 is a deficient number, since it is larger than the sum of its proper divisors (1).

40384963 is an equidigital number, since it uses as much as digits as its factorization.

40384963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 40384963 is about 6354.9164431958. The cubic root of 40384963 is about 343.0888175334.

It can be divided in two parts, 40 and 384963, that added together give a triangular number (385003 = T₈₇₇).

The spelling of 40384963 in words is "forty million, three hundred eighty-four thousand, nine hundred sixty-three".