190926397 has 4 divisors (see below), whose sum is σ = 190994940. Its totient is φ = 190857856.

The previous prime is 190926389. The next prime is 190926457. The reversal of 190926397 is 793629091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154032921 + 36893476 = 12411^2 + 6074^2 .

It is a cyclic number.

It is not a de Polignac number, because 190926397 - 2³ = 190926389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190926347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29908 + ... + 35725.

It is an arithmetic number, because the mean of its divisors is an integer number (47748735).

Almost surely, 2^190926397 is an apocalyptic number.

It is an amenable number.

190926397 is a deficient number, since it is larger than the sum of its proper divisors (68543).

190926397 is an equidigital number, since it uses as much as digits as its factorization.

190926397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68542.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 190926397 is about 13817.6118414146. The cubic root of 190926397 is about 575.8225374809.

The spelling of 190926397 in words is "one hundred ninety million, nine hundred twenty-six thousand, three hundred ninety-seven".