400038332 has 12 divisors (see below), whose sum is σ = 706610520. Its totient is φ = 198149616.

The previous prime is 400038323. The next prime is 400038343. The reversal of 400038332 is 233830004.

It is a junction number, because it is equal to n+sod(n) for n = 400038298 and 400038307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466907 + ... + 467762.

It is an arithmetic number, because the mean of its divisors is an integer number (58884210).

Almost surely, 2^400038332 is an apocalyptic number.

It is an amenable number.

400038332 is a deficient number, since it is larger than the sum of its proper divisors (306572188).

400038332 is a wasteful number, since it uses less digits than its factorization.

400038332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934780 (or 934778 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 400038332 is about 20000.9582770426. The cubic root of 400038332 is about 736.8298350255.

Adding to 400038332 its reverse (233830004), we get a palindrome (633868336).

The spelling of 400038332 in words is "four hundred million, thirty-eight thousand, three hundred thirty-two".