40001465 has 16 divisors (see below), whose sum is σ = 56028672. Its totient is φ = 26844864.

The previous prime is 40001461. The next prime is 40001473. The reversal of 40001465 is 56410004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40001465 - 2² = 40001461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40001461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10514 + ... + 13803.

It is an arithmetic number, because the mean of its divisors is an integer number (3501792).

Almost surely, 2^40001465 is an apocalyptic number.

It is an amenable number.

40001465 is a deficient number, since it is larger than the sum of its proper divisors (16027207).

40001465 is a wasteful number, since it uses less digits than its factorization.

40001465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24376.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40001465 is about 6324.6711376956. The cubic root of 40001465 is about 341.9993644756. Note that the first 3 decimals are identical.

Adding to 40001465 its reverse (56410004), we get a palindrome (96411469).

The spelling of 40001465 in words is "forty million, one thousand, four hundred sixty-five".