400011794 has 24 divisors (see below), whose sum is σ = 751672908. Its totient is φ = 158245920.

The previous prime is 400011793. The next prime is 400011823. The reversal of 400011794 is 497110004.

It can be written as a sum of positive squares in 2 ways, for example, as 363855625 + 36156169 = 19075^2 + 6013^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400011793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155717 + ... + 158264.

Almost surely, 2^400011794 is an apocalyptic number.

400011794 is a deficient number, since it is larger than the sum of its proper divisors (351661114).

400011794 is a wasteful number, since it uses less digits than its factorization.

400011794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314010 (or 314003 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 400011794 is about 20000.2948478266. The cubic root of 400011794 is about 736.8135412348.

Adding to 400011794 its reverse (497110004), we get a palindrome (897121798).

The spelling of 400011794 in words is "four hundred million, eleven thousand, seven hundred ninety-four".