4040738 has 8 divisors (see below), whose sum is σ = 6527388. Its totient is φ = 1864944.

The previous prime is 4040737. The next prime is 4040741. The reversal of 4040738 is 8370404.

It can be written as a sum of positive squares in 2 ways, for example, as 3323329 + 717409 = 1823^2 + 847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 155413 = 4040738 / (4 + 0 + 4 + 0 + 7 + 3 + 8).

It is not an unprimeable number, because it can be changed into a prime (4040737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77681 + ... + 77732.

Almost surely, 2^4040738 is an apocalyptic number.

4040738 is a deficient number, since it is larger than the sum of its proper divisors (2486650).

4040738 is a wasteful number, since it uses less digits than its factorization.

4040738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155428.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 4040738 is about 2010.1587002025. The cubic root of 4040738 is about 159.2771822159.

The spelling of 4040738 in words is "four million, forty thousand, seven hundred thirty-eight".