It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.
It is a cyclic number.
It is a Duffinian number.
2978149 is a lucky number.
It is a congruent number.
22978149 is an apocalyptic number.
It is an amenable number.
2978149 is a wasteful number, since it uses less digits than its factorization.
2978149 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3514.
The square root of 2978149 is about 1725.7314391295. The cubic root of 2978149 is about 143.8739412483.
The spelling of 2978149 in words is "two million, nine hundred seventy-eight thousand, one hundred forty-nine".