84148949 has 2 divisors, whose sum is σ = 84148950. Its totient is φ = 84148948.

The previous prime is 84148943. The next prime is 84148957. The reversal of 84148949 is 94984148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67486225 + 16662724 = 8215^2 + 4082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84148949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84148943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42074474 + 42074475.

It is an arithmetic number, because the mean of its divisors is an integer number (42074475).

Almost surely, 2^84148949 is an apocalyptic number.

It is an amenable number.

84148949 is a deficient number, since it is larger than the sum of its proper divisors (1).

84148949 is an equidigital number, since it uses as much as digits as its factorization.

84148949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 47.

The square root of 84148949 is about 9173.2736250479. The cubic root of 84148949 is about 438.2106202617.

The spelling of 84148949 in words is "eighty-four million, one hundred forty-eight thousand, nine hundred forty-nine".