400120673 has 8 divisors (see below), whose sum is σ = 422549568. Its totient is φ = 378111184.

The previous prime is 400120667. The next prime is 400120703. The reversal of 400120673 is 376021004.

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 400120673 - 2⁴ = 400120657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400120603) 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, 102890 + ... + 106707.

It is an arithmetic number, because the mean of its divisors is an integer number (52818696).

Almost surely, 2^400120673 is an apocalyptic number.

It is an amenable number.

400120673 is a deficient number, since it is larger than the sum of its proper divisors (22428895).

400120673 is a wasteful number, since it uses less digits than its factorization.

400120673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209703.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 400120673 is about 20003.0165975035. The cubic root of 400120673 is about 736.8803861339.

Adding to 400120673 its reverse (376021004), we get a palindrome (776141677).

The spelling of 400120673 in words is "four hundred million, one hundred twenty thousand, six hundred seventy-three".