40263338 has 4 divisors (see below), whose sum is σ = 60395010. Its totient is φ = 20131668.

The previous prime is 40263331. The next prime is 40263359. The reversal of 40263338 is 83336204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33097009 + 7166329 = 5753^2 + 2677^2 .

It is a super-2 number, since 2×40263338² = 3242272773804488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40263338.

It is not an unprimeable number, because it can be changed into a prime (40263331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065833 + ... + 10065836.

Almost surely, 2^40263338 is an apocalyptic number.

40263338 is a deficient number, since it is larger than the sum of its proper divisors (20131672).

40263338 is a wasteful number, since it uses less digits than its factorization.

40263338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20131671.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 40263338 is about 6345.3398648142. The cubic root of 40263338 is about 342.7440511101.

The spelling of 40263338 in words is "forty million, two hundred sixty-three thousand, three hundred thirty-eight".