40664354 has 4 divisors (see below), whose sum is σ = 60996534. Its totient is φ = 20332176.

The previous prime is 40664347. The next prime is 40664359. The reversal of 40664354 is 45346604.

40664354 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36881329 + 3783025 = 6073^2 + 1945^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40664354.

It is not an unprimeable number, because it can be changed into a prime (40664359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166087 + ... + 10166090.

Almost surely, 2^40664354 is an apocalyptic number.

40664354 is a deficient number, since it is larger than the sum of its proper divisors (20332180).

40664354 is a wasteful number, since it uses less digits than its factorization.

40664354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20332179.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 40664354 is about 6376.8608264569. The cubic root of 40664354 is about 343.8781849650.

The spelling of 40664354 in words is "forty million, six hundred sixty-four thousand, three hundred fifty-four".