400777046 has 8 divisors (see below), whose sum is σ = 601517664. Its totient is φ = 200271160.

The previous prime is 400777031. The next prime is 400777079. The reversal of 400777046 is 640777004.

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

It is a super-2 number, since 2×400777046² = 321244481200972232, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 400776997 and 400777015.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 54350 + ... + 61281.

It is an arithmetic number, because the mean of its divisors is an integer number (75189708).

Almost surely, 2^400777046 is an apocalyptic number.

400777046 is a deficient number, since it is larger than the sum of its proper divisors (200740618).

400777046 is a wasteful number, since it uses less digits than its factorization.

400777046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117366.

The product of its (nonzero) digits is 32928, while the sum is 35.

The square root of 400777046 is about 20019.4167247700. The cubic root of 400777046 is about 737.2831014372.

The spelling of 400777046 in words is "four hundred million, seven hundred seventy-seven thousand, forty-six".