40355249 has 8 divisors (see below), whose sum is σ = 44141760. Its totient is φ = 36588400.

The previous prime is 40355177. The next prime is 40355261. The reversal of 40355249 is 94255304.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40355249 - 2¹² = 40351153 is a prime.

It is a super-2 number, since 2×40355249² = 3257092243704002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40355279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437 + ... + 8994.

It is an arithmetic number, because the mean of its divisors is an integer number (5517720).

Almost surely, 2^40355249 is an apocalyptic number.

It is an amenable number.

40355249 is a deficient number, since it is larger than the sum of its proper divisors (3786511).

40355249 is a wasteful number, since it uses less digits than its factorization.

40355249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9831.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 40355249 is about 6352.5781380476. The cubic root of 40355249 is about 343.0046521935.

It can be divided in two parts, 40355 and 249, that added together give a palindrome (40604).

The spelling of 40355249 in words is "forty million, three hundred fifty-five thousand, two hundred forty-nine".