40368549 has 16 divisors (see below), whose sum is σ = 58167872. Its totient is φ = 24755328.

The previous prime is 40368533. The next prime is 40368553. The reversal of 40368549 is 94586304.

It is not a de Polignac number, because 40368549 - 2⁴ = 40368533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40368599) 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, 10554 + ... + 13860.

It is an arithmetic number, because the mean of its divisors is an integer number (3635492).

Almost surely, 2^40368549 is an apocalyptic number.

It is an amenable number.

40368549 is a deficient number, since it is larger than the sum of its proper divisors (17799323).

40368549 is a wasteful number, since it uses less digits than its factorization.

40368549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 40368549 is about 6353.6248708906. The cubic root of 40368549 is about 343.0423297440.

The spelling of 40368549 in words is "forty million, three hundred sixty-eight thousand, five hundred forty-nine".