86890946 has 4 divisors (see below), whose sum is σ = 130336422. Its totient is φ = 43445472.

The previous prime is 86890907. The next prime is 86890949. The reversal of 86890946 is 64909868.

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

It can be written as a sum of positive squares in only one way, i.e., 63027721 + 23863225 = 7939^2 + 4885^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86890894 and 86890903.

It is not an unprimeable number, because it can be changed into a prime (86890949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21722735 + ... + 21722738.

Almost surely, 2^86890946 is an apocalyptic number.

86890946 is a deficient number, since it is larger than the sum of its proper divisors (43445476).

86890946 is a wasteful number, since it uses less digits than its factorization.

86890946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43445475.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 86890946 is about 9321.5313119680. The cubic root of 86890946 is about 442.9195416659.

The spelling of 86890946 in words is "eighty-six million, eight hundred ninety thousand, nine hundred forty-six".