126890799 has 16 divisors (see below), whose sum is σ = 193989120. Its totient is φ = 72272160.

The previous prime is 126890779. The next prime is 126890801. The reversal of 126890799 is 997098621.

126890799 = T₃₀₂ + T₃₀₃ + ... + T₉₂₃.

It is a happy number.

It is not a de Polignac number, because 126890799 - 2⁵ = 126890767 is a prime.

It is a super-2 number, since 2×126890799² = 32202549741716802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126890779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3184 + ... + 16245.

It is an arithmetic number, because the mean of its divisors is an integer number (12124320).

Almost surely, 2^126890799 is an apocalyptic number.

126890799 is a deficient number, since it is larger than the sum of its proper divisors (67098321).

126890799 is a wasteful number, since it uses less digits than its factorization.

126890799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19750.

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 126890799 is about 11264.5816167313. The cubic root of 126890799 is about 502.5084595492.

The spelling of 126890799 in words is "one hundred twenty-six million, eight hundred ninety thousand, seven hundred ninety-nine".