977149 has 2 divisors, whose sum is σ = 977150. Its totient is φ = 977148.

The previous prime is 977147. The next prime is 977167. The reversal of 977149 is 941779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669124 + 308025 = 818^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 977149 - 2¹ = 977147 is a prime.

Together with 977147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488574 + 488575.

It is an arithmetic number, because the mean of its divisors is an integer number (488575).

2⁹⁷⁷¹⁴⁹ is an apocalyptic number.

It is an amenable number.

977149 is a deficient number, since it is larger than the sum of its proper divisors (1).

977149 is an equidigital number, since it uses as much as digits as its factorization.

977149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 37.

The square root of 977149 is about 988.5084723967. The cubic root of 977149 is about 99.2324233352.

The spelling of 977149 in words is "nine hundred seventy-seven thousand, one hundred forty-nine".