247669401 has 8 divisors (see below), whose sum is σ = 377401024. Its totient is φ = 141525360.

The previous prime is 247669361. The next prime is 247669417. The reversal of 247669401 is 104966742.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247669401 - 2²⁵ = 214114969 is a prime.

It is a super-2 number, since 2×247669401² = 122680264383397602, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 247669401.

It is not an unprimeable number, because it can be changed into a prime (247669441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5896870 + ... + 5896911.

It is an arithmetic number, because the mean of its divisors is an integer number (47175128).

Almost surely, 2^247669401 is an apocalyptic number.

247669401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

247669401 is a deficient number, since it is larger than the sum of its proper divisors (129731623).

247669401 is a wasteful number, since it uses less digits than its factorization.

247669401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11793791.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 247669401 is about 15737.5157188166. The cubic root of 247669401 is about 627.9968296390.

The spelling of 247669401 in words is "two hundred forty-seven million, six hundred sixty-nine thousand, four hundred one".