4038400402 has 8 divisors (see below), whose sum is σ = 6171895116. Its totient is φ = 1981102032.

The previous prime is 4038400397. The next prime is 4038400403. The reversal of 4038400402 is 2040048304.

It can be written as a sum of positive squares in 2 ways, for example, as 3301766521 + 736633881 = 57461^2 + 27141^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4038400403) 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, 19048953 + ... + 19049164.

Almost surely, 2^4038400402 is an apocalyptic number.

4038400402 is a deficient number, since it is larger than the sum of its proper divisors (2133494714).

4038400402 is a wasteful number, since it uses less digits than its factorization.

4038400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38098172.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 4038400402 is about 63548.4099092967. The cubic root of 4038400402 is about 1592.4646193303.

Adding to 4038400402 its reverse (2040048304), we get a palindrome (6078448706).

The spelling of 4038400402 in words is "four billion, thirty-eight million, four hundred thousand, four hundred two".