4001465 has 8 divisors (see below), whose sum is σ = 5171208. Its totient is φ = 2954880.

The previous prime is 4001461. The next prime is 4001467. The reversal of 4001465 is 5641004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 436921 + 3564544 = 661^2 + 1888^2 .

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

It is not a de Polignac number, because 4001465 - 2² = 4001461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4001461) 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 in 7 ways as a sum of consecutive naturals, for example, 30716 + ... + 30845.

It is an arithmetic number, because the mean of its divisors is an integer number (646401).

Almost surely, 2^4001465 is an apocalyptic number.

It is an amenable number.

4001465 is a deficient number, since it is larger than the sum of its proper divisors (1169743).

4001465 is a wasteful number, since it uses less digits than its factorization.

4001465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61579.

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

The square root of 4001465 is about 2000.3662164714. The cubic root of 4001465 is about 158.7594823526.

Adding to 4001465 its reverse (5641004), we get a palindrome (9642469).

The spelling of 4001465 in words is "four million, one thousand, four hundred sixty-five".