84474215401 has 2 divisors, whose sum is σ = 84474215402. Its totient is φ = 84474215400.

The previous prime is 84474215393. The next prime is 84474215431. The reversal of 84474215401 is 10451247448.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45838381801 + 38635833600 = 214099^2 + 196560^2 .

It is a cyclic number.

It is not a de Polignac number, because 84474215401 - 2³ = 84474215393 is a prime.

It is a super-2 number, since 2×84474215401² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84474215431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42237107700 + 42237107701.

It is an arithmetic number, because the mean of its divisors is an integer number (42237107701).

Almost surely, 2^84474215401 is an apocalyptic number.

It is an amenable number.

84474215401 is a deficient number, since it is larger than the sum of its proper divisors (1).

84474215401 is an equidigital number, since it uses as much as digits as its factorization.

84474215401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 143360, while the sum is 40.

The spelling of 84474215401 in words is "eighty-four billion, four hundred seventy-four million, two hundred fifteen thousand, four hundred one".