40744388 has 6 divisors (see below), whose sum is σ = 71302686. Its totient is φ = 20372192.

The previous prime is 40744387. The next prime is 40744409. The reversal of 40744388 is 88344704.

It can be written as a sum of positive squares in only one way, i.e., 35022724 + 5721664 = 5918^2 + 2392^2 .

It is not an unprimeable number, because it can be changed into a prime (40744381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5093045 + ... + 5093052.

It is an arithmetic number, because the mean of its divisors is an integer number (11883781).

Almost surely, 2^40744388 is an apocalyptic number.

It is an amenable number.

40744388 is a deficient number, since it is larger than the sum of its proper divisors (30558298).

40744388 is a wasteful number, since it uses less digits than its factorization.

40744388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186101 (or 10186099 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 40744388 is about 6383.1330865023. The cubic root of 40744388 is about 344.1036396757.

The spelling of 40744388 in words is "forty million, seven hundred forty-four thousand, three hundred eighty-eight".