401355238 has 4 divisors (see below), whose sum is σ = 602032860. Its totient is φ = 200677618.

The previous prime is 401355217. The next prime is 401355239. The reversal of 401355238 is 832553104.

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

It is a super-2 number, since 2×401355238² = 322172054140073288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401355239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100338808 + ... + 100338811.

It is an arithmetic number, because the mean of its divisors is an integer number (150508215).

Almost surely, 2^401355238 is an apocalyptic number.

401355238 is a deficient number, since it is larger than the sum of its proper divisors (200677622).

401355238 is a wasteful number, since it uses less digits than its factorization.

401355238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200677621.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 401355238 is about 20033.8523005437. The cubic root of 401355238 is about 737.6374849688.

The spelling of 401355238 in words is "four hundred one million, three hundred fifty-five thousand, two hundred thirty-eight".