699149 has 4 divisors (see below), whose sum is σ = 762720. Its totient is φ = 635580.

The previous prime is 699133. The next prime is 699151. The reversal of 699149 is 941996.

699149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 699149 - 2⁴ = 699133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699119) 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, 31769 + ... + 31790.

It is an arithmetic number, because the mean of its divisors is an integer number (190680).

2⁶⁹⁹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

699149 is a deficient number, since it is larger than the sum of its proper divisors (63571).

699149 is a wasteful number, since it uses less digits than its factorization.

699149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63570.

The product of its digits is 17496, while the sum is 38.

The square root of 699149 is about 836.1513020979. The cubic root of 699149 is about 88.7544043308.

It can be divided in two parts, 699 and 149, that added together give a palindrome (848).

The spelling of 699149 in words is "six hundred ninety-nine thousand, one hundred forty-nine".