400983723 has 16 divisors (see below), whose sum is σ = 678914560. Its totient is φ = 229133448.

The previous prime is 400983673. The next prime is 400983727. The reversal of 400983723 is 327389004.

It is not a de Polignac number, because 400983723 - 2⁹ = 400983211 is a prime.

It is a super-2 number, since 2×400983723² = 321575892221881458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400983727) 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 15 ways as a sum of consecutive naturals, for example, 1060615 + ... + 1060992.

It is an arithmetic number, because the mean of its divisors is an integer number (42432160).

Almost surely, 2^400983723 is an apocalyptic number.

400983723 is a deficient number, since it is larger than the sum of its proper divisors (277930837).

400983723 is a wasteful number, since it uses less digits than its factorization.

400983723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121623 (or 2121617 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 400983723 is about 20024.5779730810. The cubic root of 400983723 is about 737.4098163401.

The spelling of 400983723 in words is "four hundred million, nine hundred eighty-three thousand, seven hundred twenty-three".