803946649 has 4 divisors (see below), whose sum is σ = 877032720. Its totient is φ = 730860580.

The previous prime is 803946641. The next prime is 803946673. The reversal of 803946649 is 946649308.

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 803946649 - 2³ = 803946641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (803946641) 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, 36543019 + ... + 36543040.

It is an arithmetic number, because the mean of its divisors is an integer number (219258180).

Almost surely, 2^803946649 is an apocalyptic number.

It is an amenable number.

803946649 is a deficient number, since it is larger than the sum of its proper divisors (73086071).

803946649 is a wasteful number, since it uses less digits than its factorization.

803946649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73086070.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 803946649 is about 28353.9529695596. The cubic root of 803946649 is about 929.8418234087.

The spelling of 803946649 in words is "eight hundred three million, nine hundred forty-six thousand, six hundred forty-nine".