400343241 has 4 divisors (see below), whose sum is σ = 533790992. Its totient is φ = 266895492.

The previous prime is 400343239. The next prime is 400343263. The reversal of 400343241 is 142343004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400343241 - 2¹ = 400343239 is a prime.

It is a super-2 number, since 2×400343241² = 320549421228768162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400343341) 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, 66723871 + ... + 66723876.

It is an arithmetic number, because the mean of its divisors is an integer number (133447748).

Almost surely, 2^400343241 is an apocalyptic number.

It is an amenable number.

400343241 is a deficient number, since it is larger than the sum of its proper divisors (133447751).

400343241 is a wasteful number, since it uses less digits than its factorization.

400343241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133447750.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 400343241 is about 20008.5791849396. The cubic root of 400343241 is about 737.0169912505.

Adding to 400343241 its reverse (142343004), we get a palindrome (542686245).

The spelling of 400343241 in words is "four hundred million, three hundred forty-three thousand, two hundred forty-one".