211947494 has 16 divisors (see below), whose sum is σ = 349359696. Its totient is φ = 95635200.

The previous prime is 211947493. The next prime is 211947499. The reversal of 211947494 is 494749112.

211947494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211947493) 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, 32147 + ... + 38174.

It is an arithmetic number, because the mean of its divisors is an integer number (21834981).

Almost surely, 2^211947494 is an apocalyptic number.

211947494 is a deficient number, since it is larger than the sum of its proper divisors (137412202).

211947494 is a wasteful number, since it uses less digits than its factorization.

211947494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70471.

The product of its digits is 72576, while the sum is 41.

The square root of 211947494 is about 14558.4166034634. The cubic root of 211947494 is about 596.2239654199.

The spelling of 211947494 in words is "two hundred eleven million, nine hundred forty-seven thousand, four hundred ninety-four".