828197401 has 4 divisors (see below), whose sum is σ = 833682304. Its totient is φ = 822712500.

The previous prime is 828197351. The next prime is 828197407. The reversal of 828197401 is 104791828.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-828197401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828197407) 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, 2742225 + ... + 2742526.

It is an arithmetic number, because the mean of its divisors is an integer number (208420576).

Almost surely, 2^828197401 is an apocalyptic number.

It is an amenable number.

828197401 is a deficient number, since it is larger than the sum of its proper divisors (5484903).

828197401 is a wasteful number, since it uses less digits than its factorization.

828197401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484902.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 828197401 is about 28778.4190149494. The cubic root of 828197401 is about 939.0988046856.

The spelling of 828197401 in words is "eight hundred twenty-eight million, one hundred ninety-seven thousand, four hundred one".