400339238 has 8 divisors (see below), whose sum is σ = 646701888. Its totient is φ = 184771944.

The previous prime is 400339237. The next prime is 400339259. The reversal of 400339238 is 832933004.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400339231) 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, 7698806 + ... + 7698857.

It is an arithmetic number, because the mean of its divisors is an integer number (80837736).

Almost surely, 2^400339238 is an apocalyptic number.

400339238 is a deficient number, since it is larger than the sum of its proper divisors (246362650).

400339238 is a wasteful number, since it uses less digits than its factorization.

400339238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15397678.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 400339238 is about 20008.4791525993. The cubic root of 400339238 is about 737.0145347844.

The spelling of 400339238 in words is "four hundred million, three hundred thirty-nine thousand, two hundred thirty-eight".