47990690 has 16 divisors (see below), whose sum is σ = 94236480. Its totient is φ = 17451120.

The previous prime is 47990681. The next prime is 47990699. The reversal of 47990690 is 9609974.

47990690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (47990681) and next prime (47990699).

It is a super-2 number, since 2×47990690² = 4606212653352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47990699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218030 + ... + 218249.

It is an arithmetic number, because the mean of its divisors is an integer number (5889780).

Almost surely, 2^47990690 is an apocalyptic number.

47990690 is a deficient number, since it is larger than the sum of its proper divisors (46245790).

47990690 is a wasteful number, since it uses less digits than its factorization.

47990690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436297.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 47990690 is about 6927.5313063168. The cubic root of 47990690 is about 363.4006206684.

The spelling of 47990690 in words is "forty-seven million, nine hundred ninety thousand, six hundred ninety".