40389244 has 24 divisors (see below), whose sum is σ = 81375840. Its totient is φ = 17181696.

The previous prime is 40389197. The next prime is 40389289. The reversal of 40389244 is 44298304.

It is a super-4 number, since 4×40389244⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1429 + ... + 9100.

It is an arithmetic number, because the mean of its divisors is an integer number (3390660).

Almost surely, 2^40389244 is an apocalyptic number.

It is an amenable number.

40389244 is an abundant number, since it is smaller than the sum of its proper divisors (40986596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40389244 is a wasteful number, since it uses less digits than its factorization.

40389244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10677 (or 10675 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 40389244 is about 6355.2532600991. The cubic root of 40389244 is about 343.1009401258.

The spelling of 40389244 in words is "forty million, three hundred eighty-nine thousand, two hundred forty-four".