46640043 has 20 divisors (see below), whose sum is σ = 69861528. Its totient is φ = 31008960.

The previous prime is 46640039. The next prime is 46640047. The reversal of 46640043 is 34004664.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (46640039) and next prime (46640047).

It is not a de Polignac number, because 46640043 - 2² = 46640039 is a prime.

It is a super-2 number, since 2×46640043² = 4350587222083698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 46639989 and 46640016.

It is not an unprimeable number, because it can be changed into a prime (46640047) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47548 + ... + 48518.

Almost surely, 2^46640043 is an apocalyptic number.

46640043 is a deficient number, since it is larger than the sum of its proper divisors (23221485).

46640043 is an equidigital number, since it uses as much as digits as its factorization.

46640043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 46640043 is about 6829.3515797622. The cubic root of 46640043 is about 359.9589536535.

The spelling of 46640043 in words is "forty-six million, six hundred forty thousand, forty-three".