86419749 has 16 divisors (see below), whose sum is σ = 125945792. Its totient is φ = 52386048.

The previous prime is 86419703. The next prime is 86419757. The reversal of 86419749 is 94791468.

It is not a de Polignac number, because 86419749 - 2⁷ = 86419621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86419698 and 86419707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86419799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13924 + ... + 19149.

It is an arithmetic number, because the mean of its divisors is an integer number (7871612).

Almost surely, 2^86419749 is an apocalyptic number.

It is an amenable number.

86419749 is a deficient number, since it is larger than the sum of its proper divisors (39526043).

86419749 is a wasteful number, since it uses less digits than its factorization.

86419749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33156.

The product of its digits is 435456, while the sum is 48.

The square root of 86419749 is about 9296.2222972560. Note that the first 4 decimals coincide. The cubic root of 86419749 is about 442.1174605754.

The spelling of 86419749 in words is "eighty-six million, four hundred nineteen thousand, seven hundred forty-nine".