249686226 has 20 divisors (see below), whose sum is σ = 559482462. Its totient is φ = 83228688.

The previous prime is 249686221. The next prime is 249686243. The reversal of 249686226 is 622686942.

It can be written as a sum of positive squares in only one way, i.e., 191850201 + 57836025 = 13851^2 + 7605^2 .

It is a super-2 number, since 2×249686226² = 124686422908246152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249686221) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 770475 + ... + 770798.

Almost surely, 2^249686226 is an apocalyptic number.

249686226 is an abundant number, since it is smaller than the sum of its proper divisors (309796236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249686226 is a wasteful number, since it uses less digits than its factorization.

249686226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541287 (or 1541278 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 249686226 is about 15801.4627803884. The cubic root of 249686226 is about 629.6968609638.

The spelling of 249686226 in words is "two hundred forty-nine million, six hundred eighty-six thousand, two hundred twenty-six".