85190437 has 2 divisors, whose sum is σ = 85190438. Its totient is φ = 85190436.

The previous prime is 85190431. The next prime is 85190447. The reversal of 85190437 is 73409158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45576001 + 39614436 = 6751^2 + 6294^2 .

It is a cyclic number.

It is not a de Polignac number, because 85190437 - 2⁷ = 85190309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85190396 and 85190405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85190431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42595218 + 42595219.

It is an arithmetic number, because the mean of its divisors is an integer number (42595219).

Almost surely, 2^85190437 is an apocalyptic number.

It is an amenable number.

85190437 is a deficient number, since it is larger than the sum of its proper divisors (1).

85190437 is an equidigital number, since it uses as much as digits as its factorization.

85190437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 85190437 is about 9229.8665754170. The cubic root of 85190437 is about 440.0110827098.

The spelling of 85190437 in words is "eighty-five million, one hundred ninety thousand, four hundred thirty-seven".