400374003 has 8 divisors (see below), whose sum is σ = 548260048. Its totient is φ = 259701984.

The previous prime is 400374001. The next prime is 400374011. The reversal of 400374003 is 300473004.

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

It is not a de Polignac number, because 400374003 - 2¹ = 400374001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400374001) 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 7 ways as a sum of consecutive naturals, for example, 1803376 + ... + 1803597.

It is an arithmetic number, because the mean of its divisors is an integer number (68532506).

Almost surely, 2^400374003 is an apocalyptic number.

400374003 is a deficient number, since it is larger than the sum of its proper divisors (147886045).

400374003 is a wasteful number, since it uses less digits than its factorization.

400374003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3607013.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 400374003 is about 20009.3478904236. The cubic root of 400374003 is about 737.0358679990.

Subtracting from 400374003 its reverse (300473004), we obtain a palindrome (99900999).

The spelling of 400374003 in words is "four hundred million, three hundred seventy-four thousand, three".