40040770 has 64 divisors (see below), whose sum is σ = 90720000. Its totient is φ = 12360960.

The previous prime is 40040761. The next prime is 40040773. The reversal of 40040770 is 7704004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (40040773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114556 + ... + 114904.

It is an arithmetic number, because the mean of its divisors is an integer number (1417500).

Almost surely, 2^40040770 is an apocalyptic number.

40040770 is an abundant number, since it is smaller than the sum of its proper divisors (50679230).

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

40040770 is a wasteful number, since it uses less digits than its factorization.

40040770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 40040770 is about 6327.7776509609. Note that the first 3 decimals coincide. The cubic root of 40040770 is about 342.1113427467. Note that the first 3 decimals are identical.

Adding to 40040770 its reverse (7704004), we get a palindrome (47744774).

The spelling of 40040770 in words is "forty million, forty thousand, seven hundred seventy".