400723854 has 16 divisors (see below), whose sum is σ = 802558848. Its totient is φ = 133389432.

The previous prime is 400723793. The next prime is 400723859. The reversal of 400723854 is 458327004.

It is a super-2 number, since 2×400723854² = 321159214329226632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400723859) 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, 41572 + ... + 50295.

It is an arithmetic number, because the mean of its divisors is an integer number (50159928).

Almost surely, 2^400723854 is an apocalyptic number.

400723854 is an abundant number, since it is smaller than the sum of its proper divisors (401834994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400723854 is a wasteful number, since it uses less digits than its factorization.

400723854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92599.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 400723854 is about 20018.0881704522. The cubic root of 400723854 is about 737.2504820558.

The spelling of 400723854 in words is "four hundred million, seven hundred twenty-three thousand, eight hundred fifty-four".