971490 has 64 divisors (see below), whose sum is σ = 2612736. Its totient is φ = 229632.

The previous prime is 971483. The next prime is 971491. The reversal of 971490 is 94179.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (971491) by changing a digit.

971490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18304 + ... + 18356.

It is an arithmetic number, because the mean of its divisors is an integer number (40824).

2⁹⁷¹⁴⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 971490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306368).

971490 is an abundant number, since it is smaller than the sum of its proper divisors (1641246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

971490 is a wasteful number, since it uses less digits than its factorization.

971490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 971490 is about 985.6419228097. The cubic root of 971490 is about 99.0404895090.

The spelling of 971490 in words is "nine hundred seventy-one thousand, four hundred ninety".