40289670 has 96 divisors (see below), whose sum is σ = 111434400. Its totient is φ = 10357632.

The previous prime is 40289663. The next prime is 40289687. The reversal of 40289670 is 7698204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 369576 + ... + 369684.

It is an arithmetic number, because the mean of its divisors is an integer number (1160775).

Almost surely, 2^40289670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40289670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55717200).

40289670 is an abundant number, since it is smaller than the sum of its proper divisors (71144730).

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

40289670 is a wasteful number, since it uses less digits than its factorization.

40289670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40289670 is about 6347.4144342401. The cubic root of 40289670 is about 342.8187523979.

The spelling of 40289670 in words is "forty million, two hundred eighty-nine thousand, six hundred seventy".