400610012 has 12 divisors (see below), whose sum is σ = 764801016. Its totient is φ = 182095440.

The previous prime is 400609967. The next prime is 400610017. The reversal of 400610012 is 210016004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400610017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4552343 + ... + 4552430.

It is an arithmetic number, because the mean of its divisors is an integer number (63733418).

Almost surely, 2^400610012 is an apocalyptic number.

It is an amenable number.

400610012 is a deficient number, since it is larger than the sum of its proper divisors (364191004).

400610012 is a wasteful number, since it uses less digits than its factorization.

400610012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9104788 (or 9104786 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 400610012 is about 20015.2444901380. The cubic root of 400610012 is about 737.1806600594.

Adding to 400610012 its reverse (210016004), we get a palindrome (610626016).

The spelling of 400610012 in words is "four hundred million, six hundred ten thousand, twelve".