40389530 has 8 divisors (see below), whose sum is σ = 72701172. Its totient is φ = 16155808.

The previous prime is 40389529. The next prime is 40389563. The reversal of 40389530 is 3598304.

It can be written as a sum of positive squares in 2 ways, for example, as 37295449 + 3094081 = 6107^2 + 1759^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2019467 + ... + 2019486.

Almost surely, 2^40389530 is an apocalyptic number.

40389530 is a deficient number, since it is larger than the sum of its proper divisors (32311642).

40389530 is a wasteful number, since it uses less digits than its factorization.

40389530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038960.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 40389530 is about 6355.2757611295. The cubic root of 40389530 is about 343.1017499671.

The spelling of 40389530 in words is "forty million, three hundred eighty-nine thousand, five hundred thirty".