85390619 has 4 divisors (see below), whose sum is σ = 86005080. Its totient is φ = 84776160.

The previous prime is 85390583. The next prime is 85390621. The reversal of 85390619 is 91609358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91609358 = 2 ⋅45804679.

It is a cyclic number.

It is not a de Polignac number, because 85390619 - 2¹² = 85386523 is a prime.

It is a super-2 number, since 2×85390619² = 14583115626406322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85390699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307022 + ... + 307299.

It is an arithmetic number, because the mean of its divisors is an integer number (21501270).

Almost surely, 2^85390619 is an apocalyptic number.

85390619 is a deficient number, since it is larger than the sum of its proper divisors (614461).

85390619 is a wasteful number, since it uses less digits than its factorization.

85390619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614460.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 85390619 is about 9240.7044644875. The cubic root of 85390619 is about 440.3554617236.

The spelling of 85390619 in words is "eighty-five million, three hundred ninety thousand, six hundred nineteen".