40489944 has 32 divisors (see below), whose sum is σ = 110427840. Its totient is φ = 12269600.

The previous prime is 40489859. The next prime is 40489957. The reversal of 40489944 is 44998404.

It is a junction number, because it is equal to n+sod(n) for n = 40489896 and 40489905.

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, 76422 + ... + 76949.

It is an arithmetic number, because the mean of its divisors is an integer number (3450870).

Almost surely, 2^40489944 is an apocalyptic number.

40489944 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40489944 is an abundant number, since it is smaller than the sum of its proper divisors (69937896).

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

40489944 is a wasteful number, since it uses less digits than its factorization.

40489944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153391 (or 153387 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 40489944 is about 6363.1709076529. The cubic root of 40489944 is about 343.3858475826.

It can be divided in two parts, 40 and 489944, that added together give a palindrome (489984).

The spelling of 40489944 in words is "forty million, four hundred eighty-nine thousand, nine hundred forty-four".