400011516 has 18 divisors (see below), whose sum is σ = 1011140312. Its totient is φ = 133337160.

The previous prime is 400011497. The next prime is 400011517. The reversal of 400011516 is 615110004.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400011517) 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 5 ways as a sum of consecutive naturals, for example, 5555680 + ... + 5555751.

Almost surely, 2^400011516 is an apocalyptic number.

It is an amenable number.

400011516 is an abundant number, since it is smaller than the sum of its proper divisors (611128796).

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

400011516 is a wasteful number, since it uses less digits than its factorization.

400011516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111441 (or 11111436 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 400011516 is about 20000.2878979279. The cubic root of 400011516 is about 736.8133705447.

The spelling of 400011516 in words is "four hundred million, eleven thousand, five hundred sixteen".