400745145 has 8 divisors (see below), whose sum is σ = 641192256. Its totient is φ = 213730736.

The previous prime is 400745143. The next prime is 400745159. The reversal of 400745145 is 541547004.

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 400745145 - 2¹ = 400745143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400745141) 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 7 ways as a sum of consecutive naturals, for example, 13358157 + ... + 13358186.

It is an arithmetic number, because the mean of its divisors is an integer number (80149032).

Almost surely, 2^400745145 is an apocalyptic number.

It is an amenable number.

400745145 is a deficient number, since it is larger than the sum of its proper divisors (240447111).

400745145 is a wasteful number, since it uses less digits than its factorization.

400745145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26716351.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 400745145 is about 20018.6199574296. The cubic root of 400745145 is about 737.2635388628.

The spelling of 400745145 in words is "four hundred million, seven hundred forty-five thousand, one hundred forty-five".