197801429 has 4 divisors (see below), whose sum is σ = 226058784. Its totient is φ = 169544076.

The previous prime is 197801413. The next prime is 197801437. The reversal of 197801429 is 924108791.

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 197801429 - 2⁴ = 197801413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197801029) 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, 14128667 + ... + 14128680.

It is an arithmetic number, because the mean of its divisors is an integer number (56514696).

Almost surely, 2^197801429 is an apocalyptic number.

It is an amenable number.

197801429 is a deficient number, since it is larger than the sum of its proper divisors (28257355).

197801429 is an equidigital number, since it uses as much as digits as its factorization.

197801429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28257354.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 197801429 is about 14064.1895962761. The cubic root of 197801429 is about 582.6527603183.

The spelling of 197801429 in words is "one hundred ninety-seven million, eight hundred one thousand, four hundred twenty-nine".