877428997 has 4 divisors (see below), whose sum is σ = 885629376. Its totient is φ = 869228620.

The previous prime is 877428953. The next prime is 877429019. The reversal of 877428997 is 799824778.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 877428997 - 2⁷ = 877428869 is a prime.

It is a Duffinian number.

877428997 is a modest number, since divided by 28997 gives 8774 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875428997) 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, 4100029 + ... + 4100242.

It is an arithmetic number, because the mean of its divisors is an integer number (221407344).

Almost surely, 2^877428997 is an apocalyptic number.

It is an amenable number.

877428997 is a deficient number, since it is larger than the sum of its proper divisors (8200379).

877428997 is a wasteful number, since it uses less digits than its factorization.

877428997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200378.

The product of its digits is 14224896, while the sum is 61.

The square root of 877428997 is about 29621.4280040649. The cubic root of 877428997 is about 957.3498220839.

The spelling of 877428997 in words is "eight hundred seventy-seven million, four hundred twenty-eight thousand, nine hundred ninety-seven".