40368447 has 24 divisors (see below), whose sum is σ = 67491840. Its totient is φ = 22772880.

The previous prime is 40368413. The next prime is 40368451. The reversal of 40368447 is 74486304.

It is not a de Polignac number, because 40368447 - 2¹⁸ = 40106303 is a prime.

It is a super-2 number, since 2×40368447² = 3259223026383618, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40368947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 922 + ... + 9032.

It is an arithmetic number, because the mean of its divisors is an integer number (2812160).

Almost surely, 2^40368447 is an apocalyptic number.

40368447 is a deficient number, since it is larger than the sum of its proper divisors (27123393).

40368447 is a wasteful number, since it uses less digits than its factorization.

40368447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8203 (or 8200 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 40368447 is about 6353.6168439716. The cubic root of 40368447 is about 343.0420408198.

The spelling of 40368447 in words is "forty million, three hundred sixty-eight thousand, four hundred forty-seven".