197478401 has 4 divisors (see below), whose sum is σ = 203848704. Its totient is φ = 191108100.

The previous prime is 197478397. The next prime is 197478467. The reversal of 197478401 is 104874791.

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 197478401 - 2² = 197478397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (197478101) 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, 3185105 + ... + 3185166.

It is an arithmetic number, because the mean of its divisors is an integer number (50962176).

Almost surely, 2^197478401 is an apocalyptic number.

It is an amenable number.

197478401 is a deficient number, since it is larger than the sum of its proper divisors (6370303).

197478401 is an equidigital number, since it uses as much as digits as its factorization.

197478401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6370302.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 197478401 is about 14052.7008436101. The cubic root of 197478401 is about 582.3354122480.

The spelling of 197478401 in words is "one hundred ninety-seven million, four hundred seventy-eight thousand, four hundred one".