400608847 has 4 divisors (see below), whose sum is σ = 405110160. Its totient is φ = 396107536.

The previous prime is 400608841. The next prime is 400608851. The reversal of 400608847 is 748806004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400608847 - 2³ = 400608839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400608841) 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 3 ways as a sum of consecutive naturals, for example, 2250523 + ... + 2250700.

It is an arithmetic number, because the mean of its divisors is an integer number (101277540).

Almost surely, 2^400608847 is an apocalyptic number.

400608847 is a deficient number, since it is larger than the sum of its proper divisors (4501313).

400608847 is an equidigital number, since it uses as much as digits as its factorization.

400608847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501312.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 400608847 is about 20015.2153872997. The cubic root of 400608847 is about 737.1799454689.

The spelling of 400608847 in words is "four hundred million, six hundred eight thousand, eight hundred forty-seven".