126969386 has 4 divisors (see below), whose sum is σ = 190454082. Its totient is φ = 63484692.

The previous prime is 126969383. The next prime is 126969433. The reversal of 126969386 is 683969621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 683969621 = 619 ⋅1104959.

It can be written as a sum of positive squares in only one way, i.e., 121992025 + 4977361 = 11045^2 + 2231^2 .

It is a super-2 number, since 2×126969386² = 32242449962433992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126969383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31742345 + ... + 31742348.

Almost surely, 2^126969386 is an apocalyptic number.

126969386 is a deficient number, since it is larger than the sum of its proper divisors (63484696).

126969386 is an equidigital number, since it uses as much as digits as its factorization.

126969386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63484695.

The product of its digits is 839808, while the sum is 50.

The square root of 126969386 is about 11268.0693111109. The cubic root of 126969386 is about 502.6121772941.

The spelling of 126969386 in words is "one hundred twenty-six million, nine hundred sixty-nine thousand, three hundred eighty-six".