126979829 has 8 divisors (see below), whose sum is σ = 130237632. Its totient is φ = 123729760.

The previous prime is 126979823. The next prime is 126979837. The reversal of 126979829 is 928979621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126979829 is a prime.

It is a super-2 number, since 2×126979829² = 32247753945738482, 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 (126979823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46352 + ... + 49014.

It is an arithmetic number, because the mean of its divisors is an integer number (16279704).

Almost surely, 2^126979829 is an apocalyptic number.

It is an amenable number.

126979829 is a deficient number, since it is larger than the sum of its proper divisors (3257803).

126979829 is a wasteful number, since it uses less digits than its factorization.

126979829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867.

The product of its digits is 979776, while the sum is 53.

The square root of 126979829 is about 11268.5326906390. The cubic root of 126979829 is about 502.6259565607.

The spelling of 126979829 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, eight hundred twenty-nine".