84538402 has 16 divisors (see below), whose sum is σ = 136717560. Its totient is φ = 38973312.

The previous prime is 84538381. The next prime is 84538423. The reversal of 84538402 is 20483548.

It is an interprime number because it is at equal distance from previous prime (84538381) and next prime (84538423).

It can be written as a sum of positive squares in 4 ways, for example, as 49716601 + 34821801 = 7051^2 + 5901^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36124 + ... + 38392.

Almost surely, 2^84538402 is an apocalyptic number.

84538402 is a deficient number, since it is larger than the sum of its proper divisors (52179158).

84538402 is a wasteful number, since it uses less digits than its factorization.

84538402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 84538402 is about 9194.4767115916. The cubic root of 84538402 is about 438.8856131738.

The spelling of 84538402 in words is "eighty-four million, five hundred thirty-eight thousand, four hundred two".