32440401 has 18 divisors (see below), whose sum is σ = 54509442. Its totient is φ = 18537120.

The previous prime is 32440363. The next prime is 32440409. The reversal of 32440401 is 10404423.

It can be written as a sum of positive squares in only one way, i.e., 21150801 + 11289600 = 4599^2 + 3360^2 .

It is not a de Polignac number, because 32440401 - 2⁶ = 32440337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32440409) 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 17 ways as a sum of consecutive naturals, for example, 36340 + ... + 37221.

Almost surely, 2^32440401 is an apocalyptic number.

It is an amenable number.

32440401 is a deficient number, since it is larger than the sum of its proper divisors (22069041).

32440401 is a wasteful number, since it uses less digits than its factorization.

32440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73581 (or 73571 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 32440401 is about 5695.6475487867. The cubic root of 32440401 is about 318.9300233363.

Adding to 32440401 its reverse (10404423), we get a palindrome (42844824).

It can be divided in two parts, 324 and 40401, that multiplied together give a square (13089924 = 3618²).

The spelling of 32440401 in words is "thirty-two million, four hundred forty thousand, four hundred one".