40309254 has 24 divisors (see below), whose sum is σ = 88157160. Its totient is φ = 13310208.

The previous prime is 40309253. The next prime is 40309259. The reversal of 40309254 is 45290304.

40309254 is a `hidden beast` number, since 403 + 0 + 9 + 254 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40309253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8539 + ... + 12390.

It is an arithmetic number, because the mean of its divisors is an integer number (3673215).

Almost surely, 2^40309254 is an apocalyptic number.

40309254 is an abundant number, since it is smaller than the sum of its proper divisors (47847906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40309254 is a wasteful number, since it uses less digits than its factorization.

40309254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21044 (or 21041 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 40309254 is about 6348.9569222038. The cubic root of 40309254 is about 342.8742891723.

Adding to 40309254 its reverse (45290304), we get a palindrome (85599558).

The spelling of 40309254 in words is "forty million, three hundred nine thousand, two hundred fifty-four".