400430434 has 16 divisors (see below), whose sum is σ = 654062400. Its totient is φ = 183136464.

The previous prime is 400430419. The next prime is 400430473. The reversal of 400430434 is 434034004.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180582 + ... + 182785.

It is an arithmetic number, because the mean of its divisors is an integer number (40878900).

Almost surely, 2^400430434 is an apocalyptic number.

400430434 is a deficient number, since it is larger than the sum of its proper divisors (253631966).

400430434 is a wasteful number, since it uses less digits than its factorization.

400430434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363417.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 400430434 is about 20010.7579566592. The cubic root of 400430434 is about 737.0704937213.

Adding to 400430434 its reverse (434034004), we get a palindrome (834464438).

The spelling of 400430434 in words is "four hundred million, four hundred thirty thousand, four hundred thirty-four".