211949974 has 8 divisors (see below), whose sum is σ = 317996568. Its totient is φ = 105951120.

The previous prime is 211949923. The next prime is 211949977. The reversal of 211949974 is 479949112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211949977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2809 + ... + 20779.

It is an arithmetic number, because the mean of its divisors is an integer number (39749571).

Almost surely, 2^211949974 is an apocalyptic number.

211949974 is a deficient number, since it is larger than the sum of its proper divisors (106046594).

211949974 is a wasteful number, since it uses less digits than its factorization.

211949974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23870.

The product of its digits is 163296, while the sum is 46.

The square root of 211949974 is about 14558.5017773121. The cubic root of 211949974 is about 596.2262908853.

The spelling of 211949974 in words is "two hundred eleven million, nine hundred forty-nine thousand, nine hundred seventy-four".