40634523 has 6 divisors (see below), whose sum is σ = 58694324. Its totient is φ = 27089676.

The previous prime is 40634509. The next prime is 40634543. The reversal of 40634523 is 32543604.

40634523 is a `hidden beast` number, since 4 + 0 + 634 + 5 + 23 = 666.

It is not a de Polignac number, because 40634523 - 2¹³ = 40626331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40634543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2257465 + ... + 2257482.

Almost surely, 2^40634523 is an apocalyptic number.

40634523 is a deficient number, since it is larger than the sum of its proper divisors (18059801).

40634523 is a wasteful number, since it uses less digits than its factorization.

40634523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514953 (or 4514950 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 40634523 is about 6374.5213937989. The cubic root of 40634523 is about 343.7940757588.

The spelling of 40634523 in words is "forty million, six hundred thirty-four thousand, five hundred twenty-three".