1171489401 has 12 divisors (see below), whose sum is σ = 1695041712. Its totient is φ = 779658936.

The previous prime is 1171489399. The next prime is 1171489409. The reversal of 1171489401 is 1049841711.

It is a happy number.

1171489401 is a `hidden beast` number, since 1 + 171 + 4 + 89 + 401 = 666.

It is not a de Polignac number, because 1171489401 - 2¹ = 1171489399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1171489409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105591 + ... + 116156.

It is an arithmetic number, because the mean of its divisors is an integer number (141253476).

Almost surely, 2^1171489401 is an apocalyptic number.

It is an amenable number.

1171489401 is a deficient number, since it is larger than the sum of its proper divisors (523552311).

1171489401 is a wasteful number, since it uses less digits than its factorization.

1171489401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222340 (or 222337 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 1171489401 is about 34227.0273468205. The cubic root of 1171489401 is about 1054.1751827489.

The spelling of 1171489401 in words is "one billion, one hundred seventy-one million, four hundred eighty-nine thousand, four hundred one".