40093649 has 8 divisors (see below), whose sum is σ = 40618368. Its totient is φ = 39571920.

The previous prime is 40093639. The next prime is 40093657. The reversal of 40093649 is 94639004.

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 40093649 - 2¹⁶ = 40028113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40093619) 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, 38759 + ... + 39779.

It is an arithmetic number, because the mean of its divisors is an integer number (5077296).

Almost surely, 2^40093649 is an apocalyptic number.

It is an amenable number.

40093649 is a deficient number, since it is larger than the sum of its proper divisors (524719).

40093649 is a wasteful number, since it uses less digits than its factorization.

40093649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 40093649 is about 6331.9545955416. The cubic root of 40093649 is about 342.2618772138.

It can be divided in two parts, 400 and 93649, that added together give a palindrome (94049).

The spelling of 40093649 in words is "forty million, ninety-three thousand, six hundred forty-nine".