40439070 has 48 divisors (see below), whose sum is σ = 120163680. Its totient is φ = 9243072.

The previous prime is 40439059. The next prime is 40439071. The reversal of 40439070 is 7093404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40439071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31465 + ... + 32724.

It is an arithmetic number, because the mean of its divisors is an integer number (2503410).

Almost surely, 2^40439070 is an apocalyptic number.

40439070 is an abundant number, since it is smaller than the sum of its proper divisors (79724610).

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

40439070 is a wasteful number, since it uses less digits than its factorization.

40439070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64209 (or 64206 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 40439070 is about 6359.1721159283. The cubic root of 40439070 is about 343.2419704324.

The spelling of 40439070 in words is "forty million, four hundred thirty-nine thousand, seventy".