126849399 has 16 divisors (see below), whose sum is σ = 172005600. Its totient is φ = 83137536.

The previous prime is 126849397. The next prime is 126849407. The reversal of 126849399 is 993948621.

It is not a de Polignac number, because 126849399 - 2¹ = 126849397 is a prime.

It is a super-2 number, since 2×126849399² = 32181540053322402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126849391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84447 + ... + 85935.

It is an arithmetic number, because the mean of its divisors is an integer number (10750350).

Almost surely, 2^126849399 is an apocalyptic number.

126849399 is a deficient number, since it is larger than the sum of its proper divisors (45156201).

126849399 is a wasteful number, since it uses less digits than its factorization.

126849399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954.

The product of its digits is 839808, while the sum is 51.

The square root of 126849399 is about 11262.7438486365. The cubic root of 126849399 is about 502.4538033321.

The spelling of 126849399 in words is "one hundred twenty-six million, eight hundred forty-nine thousand, three hundred ninety-nine".