39553940 has 12 divisors (see below), whose sum is σ = 83063316. Its totient is φ = 15821568.

The previous prime is 39553939. The next prime is 39553949. The reversal of 39553940 is 4935593.

39553940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5026564 + 34527376 = 2242^2 + 5876^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39553894 and 39553903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39553949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988829 + ... + 988868.

It is an arithmetic number, because the mean of its divisors is an integer number (6921943).

Almost surely, 2^39553940 is an apocalyptic number.

It is an amenable number.

39553940 is an abundant number, since it is smaller than the sum of its proper divisors (43509376).

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

39553940 is a wasteful number, since it uses less digits than its factorization.

39553940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977706 (or 1977704 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 38.

The square root of 39553940 is about 6289.1923169832. The cubic root of 39553940 is about 340.7191812627.

The spelling of 39553940 in words is "thirty-nine million, five hundred fifty-three thousand, nine hundred forty".