84003987929 has 2 divisors, whose sum is σ = 84003987930. Its totient is φ = 84003987928.

The previous prime is 84003987917. The next prime is 84003987973. The reversal of 84003987929 is 92978930048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83202248704 + 801739225 = 288448^2 + 28315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84003987929 is a prime.

It is not a weakly prime, because it can be changed into another prime (84003987979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42001993964 + 42001993965.

It is an arithmetic number, because the mean of its divisors is an integer number (42001993965).

Almost surely, 2^84003987929 is an apocalyptic number.

It is an amenable number.

84003987929 is a deficient number, since it is larger than the sum of its proper divisors (1).

84003987929 is an equidigital number, since it uses as much as digits as its factorization.

84003987929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 84003987929 in words is "eighty-four billion, three million, nine hundred eighty-seven thousand, nine hundred twenty-nine".