40395870 has 24 divisors (see below), whose sum is σ = 105029496. Its totient is φ = 10772208.

The previous prime is 40395833. The next prime is 40395871. The reversal of 40395870 is 7859304.

40395870 is a `hidden beast` number, since 40 + 39 + 587 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40395871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224332 + ... + 224511.

It is an arithmetic number, because the mean of its divisors is an integer number (4376229).

Almost surely, 2^40395870 is an apocalyptic number.

40395870 is an abundant number, since it is smaller than the sum of its proper divisors (64633626).

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

40395870 is a wasteful number, since it uses less digits than its factorization.

40395870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448856 (or 448853 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 40395870 is about 6355.7745397394. The cubic root of 40395870 is about 343.1197014122.

The spelling of 40395870 in words is "forty million, three hundred ninety-five thousand, eight hundred seventy".