126993629 has 4 divisors (see below), whose sum is σ = 145135584. Its totient is φ = 108851676.

The previous prime is 126993617. The next prime is 126993631. The reversal of 126993629 is 926399621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 926399621 = 7 ⋅132342803.

It is a cyclic number.

It is not a de Polignac number, because 126993629 - 2⁴ = 126993613 is a prime.

It is a super-2 number, since 2×126993629² = 32254763613179282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126998629) 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, 9070967 + ... + 9070980.

It is an arithmetic number, because the mean of its divisors is an integer number (36283896).

Almost surely, 2^126993629 is an apocalyptic number.

It is an amenable number.

126993629 is a deficient number, since it is larger than the sum of its proper divisors (18141955).

126993629 is an equidigital number, since it uses as much as digits as its factorization.

126993629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18141954.

The product of its digits is 314928, while the sum is 47.

The square root of 126993629 is about 11269.1449986235. The cubic root of 126993629 is about 502.6441641427.

The spelling of 126993629 in words is "one hundred twenty-six million, nine hundred ninety-three thousand, six hundred twenty-nine".