46646991 has 12 divisors (see below), whose sum is σ = 67576600. Its totient is φ = 31006800.

The previous prime is 46646987. The next prime is 46647011. The reversal of 46646991 is 19964664.

It is not a de Polignac number, because 46646991 - 2² = 46646987 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 (46646981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4285 + ... + 10566.

Almost surely, 2^46646991 is an apocalyptic number.

46646991 is a deficient number, since it is larger than the sum of its proper divisors (20929609).

46646991 is a wasteful number, since it uses less digits than its factorization.

46646991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15206 (or 15203 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 46646991 is about 6829.8602474721. The cubic root of 46646991 is about 359.9768272121.

The spelling of 46646991 in words is "forty-six million, six hundred forty-six thousand, nine hundred ninety-one".