1191407 has 8 divisors (see below), whose sum is σ = 1408800. Its totient is φ = 985824.

The previous prime is 1191373. The next prime is 1191409. The reversal of 1191407 is 7041911.

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

It is not a de Polignac number, because 1191407 - 2¹² = 1187311 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191409) 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, 2732 + ... + 3137.

It is an arithmetic number, because the mean of its divisors is an integer number (176100).

2^1191407 is an apocalyptic number.

1191407 is a deficient number, since it is larger than the sum of its proper divisors (217393).

1191407 is an equidigital number, since it uses as much as digits as its factorization.

1191407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5905.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1191407 is about 1091.5159183448. The cubic root of 1191407 is about 106.0115983511.

The spelling of 1191407 in words is "one million, one hundred ninety-one thousand, four hundred seven".