39433940 has 96 divisors (see below), whose sum is σ = 104315904. Its totient is φ = 12188160.

The previous prime is 39433921. The next prime is 39433951. The reversal of 39433940 is 4933493.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 39433940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85310 + ... + 85770.

It is an arithmetic number, because the mean of its divisors is an integer number (1086624).

Almost surely, 2^39433940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39433940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52157952).

39433940 is an abundant number, since it is smaller than the sum of its proper divisors (64881964).

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

39433940 is a wasteful number, since it uses less digits than its factorization.

39433940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 39433940 is about 6279.6448944188. The cubic root of 39433940 is about 340.3742706674.

The spelling of 39433940 in words is "thirty-nine million, four hundred thirty-three thousand, nine hundred forty".