40390700 has 54 divisors (see below), whose sum is σ = 101970036. Its totient is φ = 13846560.

The previous prime is 40390697. The next prime is 40390709. The reversal of 40390700 is 709304.

It is not an unprimeable number, because it can be changed into a prime (40390709) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 779 + ... + 9021.

It is an arithmetic number, because the mean of its divisors is an integer number (1888334).

Almost surely, 2^40390700 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 40390700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50985018).

40390700 is an abundant number, since it is smaller than the sum of its proper divisors (61579336).

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

40390700 is a wasteful number, since it uses less digits than its factorization.

40390700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8271 (or 8257 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 40390700 is about 6355.3678099698. The cubic root of 40390700 is about 343.1050629146.

The spelling of 40390700 in words is "forty million, three hundred ninety thousand, seven hundred".