400747922 has 8 divisors (see below), whose sum is σ = 601245372. Its totient is φ = 200332800.

The previous prime is 400747891. The next prime is 400747951. The reversal of 400747922 is 229747004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 294843241 + 105904681 = 17171^2 + 10291^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6479 + ... + 29042.

Almost surely, 2^400747922 is an apocalyptic number.

400747922 is a deficient number, since it is larger than the sum of its proper divisors (200497450).

400747922 is a wasteful number, since it uses less digits than its factorization.

400747922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41164.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 400747922 is about 20018.6893177351. The cubic root of 400747922 is about 737.2652418372.

The spelling of 400747922 in words is "four hundred million, seven hundred forty-seven thousand, nine hundred twenty-two".