1490971 has 4 divisors (see below), whose sum is σ = 1501992. Its totient is φ = 1479952.

The previous prime is 1490969. The next prime is 1490999. The reversal of 1490971 is 1790941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1790941 = 23 ⋅77867.

It is a cyclic number.

It is not a de Polignac number, because 1490971 - 2¹ = 1490969 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1490971 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490921) 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, 5305 + ... + 5578.

It is an arithmetic number, because the mean of its divisors is an integer number (375498).

2^1490971 is an apocalyptic number.

1490971 is a deficient number, since it is larger than the sum of its proper divisors (11021).

1490971 is a wasteful number, since it uses less digits than its factorization.

1490971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11020.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 1490971 is about 1221.0532338928. The cubic root of 1490971 is about 114.2412813135.

The spelling of 1490971 in words is "one million, four hundred ninety thousand, nine hundred seventy-one".