400038895 has 8 divisors (see below), whose sum is σ = 481744656. Its totient is φ = 318899136.

The previous prime is 400038889. The next prime is 400038907. The reversal of 400038895 is 598830004.

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

It is a cyclic number.

It is not a de Polignac number, because 400038895 - 2³ = 400038887 is a prime.

It is a super-2 number, since 2×400038895² = 320062235025642050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139942 + ... + 142771.

It is an arithmetic number, because the mean of its divisors is an integer number (60218082).

Almost surely, 2^400038895 is an apocalyptic number.

400038895 is a deficient number, since it is larger than the sum of its proper divisors (81705761).

400038895 is a wasteful number, since it uses less digits than its factorization.

400038895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283001.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 400038895 is about 20000.9723513633. The cubic root of 400038895 is about 736.8301806882.

Adding to 400038895 its reverse (598830004), we get a palindrome (998868899).

The spelling of 400038895 in words is "four hundred million, thirty-eight thousand, eight hundred ninety-five".