46681989 has 4 divisors (see below), whose sum is σ = 62242656. Its totient is φ = 31121324.

The previous prime is 46681963. The next prime is 46681997. The reversal of 46681989 is 98918664.

It is a happy number.

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 46681989 - 2⁹ = 46681477 is a prime.

It is a super-2 number, since 2×46681989² = 4358416193992242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46681289) 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, 7780329 + ... + 7780334.

It is an arithmetic number, because the mean of its divisors is an integer number (15560664).

Almost surely, 2^46681989 is an apocalyptic number.

It is an amenable number.

46681989 is a deficient number, since it is larger than the sum of its proper divisors (15560667).

46681989 is a wasteful number, since it uses less digits than its factorization.

46681989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560666.

The product of its digits is 746496, while the sum is 51.

The square root of 46681989 is about 6832.4218985657. The cubic root of 46681989 is about 360.0668317281.

The spelling of 46681989 in words is "forty-six million, six hundred eighty-one thousand, nine hundred eighty-nine".