1201399197 has 8 divisors (see below), whose sum is σ = 1696093056. Its totient is φ = 753819072.

The previous prime is 1201399193. The next prime is 1201399217. The reversal of 1201399197 is 7919931021.

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

It is not a de Polignac number, because 1201399197 - 2² = 1201399193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201399193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11778373 + ... + 11778474.

It is an arithmetic number, because the mean of its divisors is an integer number (212011632).

Almost surely, 2^1201399197 is an apocalyptic number.

1201399197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1201399197 is a deficient number, since it is larger than the sum of its proper divisors (494693859).

1201399197 is a wasteful number, since it uses less digits than its factorization.

1201399197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23556867.

The product of its (nonzero) digits is 30618, while the sum is 42.

The square root of 1201399197 is about 34661.2059368972. The cubic root of 1201399197 is about 1063.0714278385.

The spelling of 1201399197 in words is "one billion, two hundred one million, three hundred ninety-nine thousand, one hundred ninety-seven".