40214665 has 8 divisors (see below), whose sum is σ = 48736008. Its totient is φ = 31852800.

The previous prime is 40214663. The next prime is 40214683. The reversal of 40214665 is 56641204.

It can be written as a sum of positive squares in 4 ways, for example, as 10653696 + 29560969 = 3264^2 + 5437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40214665 - 2¹ = 40214663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40214663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39312 + ... + 40321.

It is an arithmetic number, because the mean of its divisors is an integer number (6092001).

Almost surely, 2^40214665 is an apocalyptic number.

It is an amenable number.

40214665 is a deficient number, since it is larger than the sum of its proper divisors (8521343).

40214665 is a wasteful number, since it uses less digits than its factorization.

40214665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79739.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40214665 is about 6341.5033706527. The cubic root of 40214665 is about 342.6058848211.

Adding to 40214665 its reverse (56641204), we get a palindrome (96855869).

The spelling of 40214665 in words is "forty million, two hundred fourteen thousand, six hundred sixty-five".