400300021412 has 12 divisors (see below), whose sum is σ = 703584100380. Its totient is φ = 199275992736.

The previous prime is 400300021367. The next prime is 400300021421. The reversal of 400300021412 is 214120003004.

It can be written as a sum of positive squares in 2 ways, for example, as 262693151296 + 137606870116 = 512536^2 + 370954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218503463 + ... + 218505294.

It is an arithmetic number, because the mean of its divisors is an integer number (58632008365).

Almost surely, 2^400300021412 is an apocalyptic number.

It is an amenable number.

400300021412 is a deficient number, since it is larger than the sum of its proper divisors (303284078968).

400300021412 is a wasteful number, since it uses less digits than its factorization.

400300021412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437008990 (or 437008988 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 400300021412 its reverse (214120003004), we get a palindrome (614420024416).

The spelling of 400300021412 in words is "four hundred billion, three hundred million, twenty-one thousand, four hundred twelve".