126623899 has 4 divisors (see below), whose sum is σ = 127260400. Its totient is φ = 125987400.

The previous prime is 126623881. The next prime is 126623911. The reversal of 126623899 is 998326621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126623899 - 2¹³ = 126615707 is a prime.

It is a super-2 number, since 2×126623899² = 32067223595924402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126623839) 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, 317952 + ... + 318349.

It is an arithmetic number, because the mean of its divisors is an integer number (31815100).

Almost surely, 2^126623899 is an apocalyptic number.

126623899 is a deficient number, since it is larger than the sum of its proper divisors (636501).

126623899 is an equidigital number, since it uses as much as digits as its factorization.

126623899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636500.

The product of its digits is 279936, while the sum is 46.

The square root of 126623899 is about 11252.7285135651. The cubic root of 126623899 is about 502.1558895865.

It can be divided in two parts, 12662 and 3899, that added together give a palindrome (16561).

The spelling of 126623899 in words is "one hundred twenty-six million, six hundred twenty-three thousand, eight hundred ninety-nine".