40547790 has 80 divisors (see below), whose sum is σ = 110241648. Its totient is φ = 10692864.

The previous prime is 40547789. The next prime is 40547791. The reversal of 40547790 is 9774504.

It is a happy number.

40547790 is a `hidden beast` number, since 40 + 547 + 79 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (40547789) and next prime (40547791).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40547791) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 91309 + ... + 91751.

Almost surely, 2^40547790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40547790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55120824).

40547790 is an abundant number, since it is smaller than the sum of its proper divisors (69693858).

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

40547790 is a wasteful number, since it uses less digits than its factorization.

40547790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 40547790 is about 6367.7146606926. The cubic root of 40547790 is about 343.5492959514.

The spelling of 40547790 in words is "forty million, five hundred forty-seven thousand, seven hundred ninety".