190977049 has 4 divisors (see below), whose sum is σ = 193394560. Its totient is φ = 188559540.

The previous prime is 190977023. The next prime is 190977053. The reversal of 190977049 is 940779091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 190977049 - 2⁷ = 190976921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190977089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1208637 + ... + 1208794.

It is an arithmetic number, because the mean of its divisors is an integer number (48348640).

Almost surely, 2^190977049 is an apocalyptic number.

It is an amenable number.

190977049 is a deficient number, since it is larger than the sum of its proper divisors (2417511).

190977049 is an equidigital number, since it uses as much as digits as its factorization.

190977049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417510.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 190977049 is about 13819.4445981016. Note that the first 3 decimals coincide. The cubic root of 190977049 is about 575.8734541077.

The spelling of 190977049 in words is "one hundred ninety million, nine hundred seventy-seven thousand, forty-nine".