84047090 has 16 divisors (see below), whose sum is σ = 153358488. Its totient is φ = 33158016.

The previous prime is 84047077. The next prime is 84047101. The reversal of 84047090 is 9074048.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 73736569 + 10310521 = 8587^2 + 3211^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56837 + ... + 58296.

Almost surely, 2^84047090 is an apocalyptic number.

84047090 is a deficient number, since it is larger than the sum of its proper divisors (69311398).

84047090 is a wasteful number, since it uses less digits than its factorization.

84047090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115213.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 84047090 is about 9167.7200000873. The cubic root of 84047090 is about 438.0337366201.

The spelling of 84047090 in words is "eighty-four million, forty-seven thousand, ninety".