400348943 has 8 divisors (see below), whose sum is σ = 425151600. Its totient is φ = 375919488.

The previous prime is 400348939. The next prime is 400349003. The reversal of 400348943 is 349843004.

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 400348943 - 2² = 400348939 is a prime.

It is a super-2 number, since 2×400348943² = 320558552322434498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400348343) by changing a digit.

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, 91088 + ... + 95381.

It is an arithmetic number, because the mean of its divisors is an integer number (53143950).

Almost surely, 2^400348943 is an apocalyptic number.

400348943 is a deficient number, since it is larger than the sum of its proper divisors (24802657).

400348943 is a wasteful number, since it uses less digits than its factorization.

400348943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186601.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 400348943 is about 20008.7216733104. The cubic root of 400348943 is about 737.0204902904.

The spelling of 400348943 in words is "four hundred million, three hundred forty-eight thousand, nine hundred forty-three".