40321667 has 4 divisors (see below), whose sum is σ = 42443880. Its totient is φ = 38199456.

The previous prime is 40321663. The next prime is 40321709. The reversal of 40321667 is 76612304.

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

It is a cyclic number.

It is not a de Polignac number, because 40321667 - 2² = 40321663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40321663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061078 + ... + 1061115.

It is an arithmetic number, because the mean of its divisors is an integer number (10610970).

Almost surely, 2^40321667 is an apocalyptic number.

40321667 is a deficient number, since it is larger than the sum of its proper divisors (2122213).

40321667 is a wasteful number, since it uses less digits than its factorization.

40321667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122212.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 40321667 is about 6349.9344091101. The cubic root of 40321667 is about 342.9094809403.

The spelling of 40321667 in words is "forty million, three hundred twenty-one thousand, six hundred sixty-seven".