1207992649 has 4 divisors (see below), whose sum is σ = 1208077840. Its totient is φ = 1207907460.

The previous prime is 1207992641. The next prime is 1207992689. The reversal of 1207992649 is 9462997021.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9462997021 = 353 ⋅26807357.

It is a cyclic number.

It is not a de Polignac number, because 1207992649 - 2³ = 1207992641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1207992641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15639 + ... + 51580.

It is an arithmetic number, because the mean of its divisors is an integer number (302019460).

Almost surely, 2^1207992649 is an apocalyptic number.

It is an amenable number.

1207992649 is a deficient number, since it is larger than the sum of its proper divisors (85191).

1207992649 is an equidigital number, since it uses as much as digits as its factorization.

1207992649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85190.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 1207992649 is about 34756.1886431755. The cubic root of 1207992649 is about 1065.0126440195.

The spelling of 1207992649 in words is "one billion, two hundred seven million, nine hundred ninety-two thousand, six hundred forty-nine".