84187492 has 6 divisors (see below), whose sum is σ = 147328118. Its totient is φ = 42093744.

The previous prime is 84187489. The next prime is 84187501. The reversal of 84187492 is 29478148.

It can be written as a sum of positive squares in only one way, i.e., 61089856 + 23097636 = 7816^2 + 4806^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10523433 + ... + 10523440.

Almost surely, 2^84187492 is an apocalyptic number.

It is an amenable number.

84187492 is a deficient number, since it is larger than the sum of its proper divisors (63140626).

84187492 is a wasteful number, since it uses less digits than its factorization.

84187492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21046877 (or 21046875 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 84187492 is about 9175.3742158018. The cubic root of 84187492 is about 438.2775150321.

The spelling of 84187492 in words is "eighty-four million, one hundred eighty-seven thousand, four hundred ninety-two".