40549740 has 192 divisors, whose sum is σ = 144764928. Its totient is φ = 8236800.

The previous prime is 40549739. The next prime is 40549741. The reversal of 40549740 is 4794504.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40549739) and next prime (40549741).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (40549741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 309475 + ... + 309605.

It is an arithmetic number, because the mean of its divisors is an integer number (753984).

Almost surely, 2^40549740 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 40549740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72382464).

40549740 is an abundant number, since it is smaller than the sum of its proper divisors (104215188).

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

40549740 is a wasteful number, since it uses less digits than its factorization.

40549740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 40549740 is about 6367.8677750092. The cubic root of 40549740 is about 343.5548031187.

The spelling of 40549740 in words is "forty million, five hundred forty-nine thousand, seven hundred forty".