977144 has 16 divisors (see below), whose sum is σ = 2094000. Its totient is φ = 418752.

The previous prime is 977107. The next prime is 977147. The reversal of 977144 is 441779.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 977144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977147) by changing a digit.

977144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8669 + ... + 8780.

It is an arithmetic number, because the mean of its divisors is an integer number (130875).

2⁹⁷⁷¹⁴⁴ is an apocalyptic number.

It is an amenable number.

977144 is an abundant number, since it is smaller than the sum of its proper divisors (1116856).

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

977144 is a wasteful number, since it uses less digits than its factorization.

977144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17462 (or 17458 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 977144 is about 988.5059433306. The cubic root of 977144 is about 99.2322540799.

It can be divided in two parts, 9771 and 44, that multiplied together give a palindrome (429924).

The spelling of 977144 in words is "nine hundred seventy-seven thousand, one hundred forty-four".