149806 has 4 divisors (see below), whose sum is σ = 224712. Its totient is φ = 74902.

The previous prime is 149803. The next prime is 149827. The reversal of 149806 is 608941.

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

It is an Ulam number.

It is a plaindrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37450 + ... + 37453.

It is an arithmetic number, because the mean of its divisors is an integer number (56178).

2¹⁴⁹⁸⁰⁶ is an apocalyptic number.

149806 is a deficient number, since it is larger than the sum of its proper divisors (74906).

149806 is an equidigital number, since it uses as much as digits as its factorization.

149806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74905.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 149806 is about 387.0478006655. The cubic root of 149806 is about 53.1100123811.

The spelling of 149806 in words is "one hundred forty-nine thousand, eight hundred six".