40234293 has 16 divisors (see below), whose sum is σ = 65025600. Its totient is φ = 24384240.

The previous prime is 40234289. The next prime is 40234301. The reversal of 40234293 is 39243204.

It is a happy number.

It is not a de Polignac number, because 40234293 - 2² = 40234289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40234253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67438 + ... + 68031.

It is an arithmetic number, because the mean of its divisors is an integer number (4064100).

Almost surely, 2^40234293 is an apocalyptic number.

It is an amenable number.

40234293 is a deficient number, since it is larger than the sum of its proper divisors (24791307).

40234293 is a wasteful number, since it uses less digits than its factorization.

40234293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135489 (or 135483 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 40234293 is about 6343.0507644193. The cubic root of 40234293 is about 342.6616155232.

Adding to 40234293 its reverse (39243204), we get a palindrome (79477497).

The spelling of 40234293 in words is "forty million, two hundred thirty-four thousand, two hundred ninety-three".