119521997 has 16 divisors (see below), whose sum is σ = 139431552. Its totient is φ = 100336320.

The previous prime is 119521993. The next prime is 119521999. The reversal of 119521997 is 799125911.

It is not a de Polignac number, because 119521997 - 2² = 119521993 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119521993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134918 + ... + 135800.

It is an arithmetic number, because the mean of its divisors is an integer number (8714472).

Almost surely, 2^119521997 is an apocalyptic number.

It is an amenable number.

119521997 is a deficient number, since it is larger than the sum of its proper divisors (19909555).

119521997 is an equidigital number, since it uses as much as digits as its factorization.

119521997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its digits is 51030, while the sum is 44.

The square root of 119521997 is about 10932.6116276030. The cubic root of 119521997 is about 492.5866229145.

The spelling of 119521997 in words is "one hundred nineteen million, five hundred twenty-one thousand, nine hundred ninety-seven".