40396068 has 18 divisors (see below), whose sum is σ = 102112374. Its totient is φ = 13465344.

The previous prime is 40396067. The next prime is 40396079. The reversal of 40396068 is 86069304.

40396068 is a `hidden beast` number, since 40 + 3 + 9 + 606 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36869184 + 3526884 = 6072^2 + 1878^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1122113 = 40396068 / (4 + 0 + 3 + 9 + 6 + 0 + 6 + 8).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (40396067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561021 + ... + 561092.

Almost surely, 2^40396068 is an apocalyptic number.

It is an amenable number.

40396068 is an abundant number, since it is smaller than the sum of its proper divisors (61716306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40396068 is a wasteful number, since it uses less digits than its factorization.

40396068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122123 (or 1122118 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 40396068 is about 6355.7901161067. The cubic root of 40396068 is about 343.1202620107.

The spelling of 40396068 in words is "forty million, three hundred ninety-six thousand, sixty-eight".