874798129 has 2 divisors, whose sum is σ = 874798130. Its totient is φ = 874798128.

The previous prime is 874798109. The next prime is 874798147. The reversal of 874798129 is 921897478.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564157504 + 310640625 = 23752^2 + 17625^2 .

It is a cyclic number.

It is not a de Polignac number, because 874798129 - 2²¹ = 872700977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 874798129.

It is not a weakly prime, because it can be changed into another prime (874798109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437399064 + 437399065.

It is an arithmetic number, because the mean of its divisors is an integer number (437399065).

Almost surely, 2^874798129 is an apocalyptic number.

It is an amenable number.

874798129 is a deficient number, since it is larger than the sum of its proper divisors (1).

874798129 is an equidigital number, since it uses as much as digits as its factorization.

874798129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 55.

The square root of 874798129 is about 29576.9864759749. The cubic root of 874798129 is about 956.3920304277.

The spelling of 874798129 in words is "eight hundred seventy-four million, seven hundred ninety-eight thousand, one hundred twenty-nine".