406620894 has 16 divisors (see below), whose sum is σ = 818423568. Its totient is φ = 134676672.

The previous prime is 406620889. The next prime is 406620931. The reversal of 406620894 is 498026604.

It is a Curzon number.

It is a congruent 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, 214887 + ... + 216770.

It is an arithmetic number, because the mean of its divisors is an integer number (51151473).

Almost surely, 2^406620894 is an apocalyptic number.

406620894 is an abundant number, since it is smaller than the sum of its proper divisors (411802674).

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

406620894 is a wasteful number, since it uses less digits than its factorization.

406620894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431819.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 406620894 is about 20164.8430194733. The cubic root of 406620894 is about 740.8493376771.

The spelling of 406620894 in words is "four hundred six million, six hundred twenty thousand, eight hundred ninety-four".