40309214 has 12 divisors (see below), whose sum is σ = 66460632. Its totient is φ = 18322260.

The previous prime is 40309211. The next prime is 40309219. The reversal of 40309214 is 41290304.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40309214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40309211) 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, 83042 + ... + 83525.

It is an arithmetic number, because the mean of its divisors is an integer number (5538386).

Almost surely, 2^40309214 is an apocalyptic number.

40309214 is a deficient number, since it is larger than the sum of its proper divisors (26151418).

40309214 is a wasteful number, since it uses less digits than its factorization.

40309214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166591 (or 166580 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40309214 is about 6348.9537720793. The cubic root of 40309214 is about 342.8741757576.

Adding to 40309214 its reverse (41290304), we get a palindrome (81599518).

The spelling of 40309214 in words is "forty million, three hundred nine thousand, two hundred fourteen".