40253715 has 12 divisors (see below), whose sum is σ = 69773184. Its totient is φ = 21468624.

The previous prime is 40253713. The next prime is 40253737. The reversal of 40253715 is 51735204.

It is a happy number.

It is not a de Polignac number, because 40253715 - 2¹ = 40253713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40253713) 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, 447219 + ... + 447308.

It is an arithmetic number, because the mean of its divisors is an integer number (5814432).

Almost surely, 2^40253715 is an apocalyptic number.

40253715 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40253715 is a deficient number, since it is larger than the sum of its proper divisors (29519469).

40253715 is a wasteful number, since it uses less digits than its factorization.

40253715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894538 (or 894535 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 40253715 is about 6344.5815464852. The cubic root of 40253715 is about 342.7167434818.

Adding to 40253715 its reverse (51735204), we get a palindrome (91988919).

The spelling of 40253715 in words is "forty million, two hundred fifty-three thousand, seven hundred fifteen".