2191412 has 6 divisors (see below), whose sum is σ = 3834978. Its totient is φ = 1095704.

The previous prime is 2191393. The next prime is 2191429. The reversal of 2191412 is 2141912.

It can be written as a sum of positive squares in only one way, i.e., 2085136 + 106276 = 1444^2 + 326^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273923 + ... + 273930.

It is an arithmetic number, because the mean of its divisors is an integer number (639163).

2^2191412 is an apocalyptic number.

It is an amenable number.

2191412 is a deficient number, since it is larger than the sum of its proper divisors (1643566).

2191412 is a wasteful number, since it uses less digits than its factorization.

2191412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547857 (or 547855 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

The square root of 2191412 is about 1480.3418524111. The cubic root of 2191412 is about 129.8896894608.

The spelling of 2191412 in words is "two million, one hundred ninety-one thousand, four hundred twelve".