400866741 has 24 divisors (see below), whose sum is σ = 635225760. Its totient is φ = 241581600.

The previous prime is 400866733. The next prime is 400866761. The reversal of 400866741 is 147668004.

It is not a de Polignac number, because 400866741 - 2³ = 400866733 is a prime.

It is a super-2 number, since 2×400866741² = 321388288079922162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400866696 and 400866705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400866761) 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 23 ways as a sum of consecutive naturals, for example, 6411 + ... + 29031.

It is an arithmetic number, because the mean of its divisors is an integer number (26467740).

Almost surely, 2^400866741 is an apocalyptic number.

It is an amenable number.

400866741 is a deficient number, since it is larger than the sum of its proper divisors (234359019).

400866741 is a wasteful number, since it uses less digits than its factorization.

400866741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22817 (or 22814 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 400866741 is about 20021.6567995758. The cubic root of 400866741 is about 737.3380993266.

The spelling of 400866741 in words is "four hundred million, eight hundred sixty-six thousand, seven hundred forty-one".