87400347 has 4 divisors (see below), whose sum is σ = 116533800. Its totient is φ = 58266896.

The previous prime is 87400333. The next prime is 87400351. The reversal of 87400347 is 74300478.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87400347 - 2⁴ = 87400331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87400147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14566722 + ... + 14566727.

It is an arithmetic number, because the mean of its divisors is an integer number (29133450).

Almost surely, 2^87400347 is an apocalyptic number.

87400347 is a deficient number, since it is larger than the sum of its proper divisors (29133453).

87400347 is a wasteful number, since it uses less digits than its factorization.

87400347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29133452.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 87400347 is about 9348.8152725359. The cubic root of 87400347 is about 443.7833991392.

The spelling of 87400347 in words is "eighty-seven million, four hundred thousand, three hundred forty-seven".