39021040 has 40 divisors (see below), whose sum is σ = 90985248. Its totient is φ = 15563520.

The previous prime is 39021013. The next prime is 39021043. The reversal of 39021040 is 4012093.

39021040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 39020999 and 39021017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39021043) 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 7 ways as a sum of consecutive naturals, for example, 50094 + ... + 50866.

Almost surely, 2^39021040 is an apocalyptic number.

It is an amenable number.

39021040 is an abundant number, since it is smaller than the sum of its proper divisors (51964208).

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

39021040 is a wasteful number, since it uses less digits than its factorization.

39021040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417 (or 1411 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 39021040 is about 6246.6823194397. The cubic root of 39021040 is about 339.1821171746.

The spelling of 39021040 in words is "thirty-nine million, twenty-one thousand, forty".