400889134 has 16 divisors (see below), whose sum is σ = 610833600. Its totient is φ = 197293824.

The previous prime is 400889131. The next prime is 400889141. The reversal of 400889134 is 431988004.

It is a junction number, because it is equal to n+sod(n) for n = 400889093 and 400889102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400889131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49482 + ... + 57010.

It is an arithmetic number, because the mean of its divisors is an integer number (38177100).

Almost surely, 2^400889134 is an apocalyptic number.

400889134 is a deficient number, since it is larger than the sum of its proper divisors (209944466).

400889134 is a wasteful number, since it uses less digits than its factorization.

400889134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7947.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 400889134 is about 20022.2160112211. The cubic root of 400889134 is about 737.3518286643.

The spelling of 400889134 in words is "four hundred million, eight hundred eighty-nine thousand, one hundred thirty-four".