190494406 has 4 divisors (see below), whose sum is σ = 285741612. Its totient is φ = 95247202.

The previous prime is 190494397. The next prime is 190494439. The reversal of 190494406 is 604494091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604494091 = 18097 ⋅33403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47623600 + ... + 47623603.

It is an arithmetic number, because the mean of its divisors is an integer number (71435403).

Almost surely, 2^190494406 is an apocalyptic number.

190494406 is a deficient number, since it is larger than the sum of its proper divisors (95247206).

190494406 is an equidigital number, since it uses as much as digits as its factorization.

190494406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95247205.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 190494406 is about 13801.9710911159. The cubic root of 190494406 is about 575.3879232322.

The spelling of 190494406 in words is "one hundred ninety million, four hundred ninety-four thousand, four hundred six".