270090391 has 4 divisors (see below), whose sum is σ = 270450784. Its totient is φ = 269730000.

The previous prime is 270090367. The next prime is 270090409. The reversal of 270090391 is 193090072.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-270090391 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 (270090361) 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, 179070 + ... + 180571.

It is an arithmetic number, because the mean of its divisors is an integer number (67612696).

Almost surely, 2^270090391 is an apocalyptic number.

270090391 is a deficient number, since it is larger than the sum of its proper divisors (360393).

270090391 is an equidigital number, since it uses as much as digits as its factorization.

270090391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360392.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 270090391 is about 16434.4270055271. The cubic root of 270090391 is about 646.4025254459.

The spelling of 270090391 in words is "two hundred seventy million, ninety thousand, three hundred ninety-one".