400750426 has 8 divisors (see below), whose sum is σ = 607077684. Its totient is φ = 198391200.

The previous prime is 400750403. The next prime is 400750429. The reversal of 400750426 is 624057004.

It can be written as a sum of positive squares in 2 ways, for example, as 384356025 + 16394401 = 19605^2 + 4049^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 400750394 and 400750403.

It is not an unprimeable number, because it can be changed into a prime (400750429) 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 3 ways as a sum of consecutive naturals, for example, 991755 + ... + 992158.

Almost surely, 2^400750426 is an apocalyptic number.

400750426 is a deficient number, since it is larger than the sum of its proper divisors (206327258).

400750426 is a wasteful number, since it uses less digits than its factorization.

400750426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984016.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 400750426 is about 20018.7518591944. The cubic root of 400750426 is about 737.2667773896.

The spelling of 400750426 in words is "four hundred million, seven hundred fifty thousand, four hundred twenty-six".