87390419 has 8 divisors (see below), whose sum is σ = 88059888. Its totient is φ = 86724000.

The previous prime is 87390389. The next prime is 87390449. The reversal of 87390419 is 91409378.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87390389) and next prime (87390449).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87390419 - 2¹² = 87386323 is a prime.

It is a super-2 number, since 2×87390419² = 15274170665991122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87390449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99209 + ... + 100085.

It is an arithmetic number, because the mean of its divisors is an integer number (11007486).

Almost surely, 2^87390419 is an apocalyptic number.

87390419 is a deficient number, since it is larger than the sum of its proper divisors (669469).

87390419 is a wasteful number, since it uses less digits than its factorization.

87390419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 87390419 is about 9348.2842810860. The cubic root of 87390419 is about 443.7665950548.

The spelling of 87390419 in words is "eighty-seven million, three hundred ninety thousand, four hundred nineteen".