400126347 has 12 divisors (see below), whose sum is σ = 583683984. Its totient is φ = 264109200.

The previous prime is 400126319. The next prime is 400126357. The reversal of 400126347 is 743621004.

It is not a de Polignac number, because 400126347 - 2⁶ = 400126283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400126347.

It is not an unprimeable number, because it can be changed into a prime (400126357) 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 in 11 ways as a sum of consecutive naturals, for example, 219183 + ... + 221000.

It is an arithmetic number, because the mean of its divisors is an integer number (48640332).

Almost surely, 2^400126347 is an apocalyptic number.

400126347 is a deficient number, since it is larger than the sum of its proper divisors (183557637).

400126347 is a wasteful number, since it uses less digits than its factorization.

400126347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440290 (or 440287 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 400126347 is about 20003.1584256087. The cubic root of 400126347 is about 736.8838692827.

The spelling of 400126347 in words is "four hundred million, one hundred twenty-six thousand, three hundred forty-seven".