40389332 has 6 divisors (see below), whose sum is σ = 70681338. Its totient is φ = 20194664.

The previous prime is 40389319. The next prime is 40389337. The reversal of 40389332 is 23398304.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23464336 + 16924996 = 4844^2 + 4114^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40389337) 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 as a sum of consecutive naturals, namely, 5048663 + ... + 5048670.

It is an arithmetic number, because the mean of its divisors is an integer number (11780223).

Almost surely, 2^40389332 is an apocalyptic number.

It is an amenable number.

40389332 is a deficient number, since it is larger than the sum of its proper divisors (30292006).

40389332 is a wasteful number, since it uses less digits than its factorization.

40389332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10097337 (or 10097335 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40389332 is about 6355.2601835015. The cubic root of 40389332 is about 343.1011893082.

The spelling of 40389332 in words is "forty million, three hundred eighty-nine thousand, three hundred thirty-two".