83047990 has 16 divisors (see below), whose sum is σ = 151593120. Its totient is φ = 32751040.

The previous prime is 83047969. The next prime is 83047997. The reversal of 83047990 is 9974038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83047997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57775 + ... + 59194.

It is an arithmetic number, because the mean of its divisors is an integer number (9474570).

Almost surely, 2^83047990 is an apocalyptic number.

83047990 is a deficient number, since it is larger than the sum of its proper divisors (68545130).

83047990 is a wasteful number, since it uses less digits than its factorization.

83047990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117047.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 83047990 is about 9113.0669919627. The cubic root of 83047990 is about 436.2911215387.

The spelling of 83047990 in words is "eighty-three million, forty-seven thousand, nine hundred ninety".