127790407 has 4 divisors (see below), whose sum is σ = 128047000. Its totient is φ = 127533816.

The previous prime is 127790387. The next prime is 127790413. The reversal of 127790407 is 704097721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704097721 = 17 ⋅41417513.

It is a cyclic number.

It is not a de Polignac number, because 127790407 - 2¹⁵ = 127757639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127791407) 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, 127548 + ... + 128545.

It is an arithmetic number, because the mean of its divisors is an integer number (32011750).

Almost surely, 2^127790407 is an apocalyptic number.

127790407 is a deficient number, since it is larger than the sum of its proper divisors (256593).

127790407 is an equidigital number, since it uses as much as digits as its factorization.

127790407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256592.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 127790407 is about 11304.4419145750. The cubic root of 127790407 is about 503.6931961063.

The spelling of 127790407 in words is "one hundred twenty-seven million, seven hundred ninety thousand, four hundred seven".