It is a sphenic number, since it is the product of 3 distinct primes.
It is an unprimeable number.
21408970 is an apocalyptic number.
1408970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1408970 is a wasteful number, since it uses less digits than its factorization.
1408970 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 140904.
The square root of 1408970 is about 1187.0004212299. Note that the first 3 decimals coincide. The cubic root of 1408970 is about 112.1073057474.
The spelling of 1408970 in words is "one million, four hundred eight thousand, nine hundred seventy".