27470989 has 16 divisors (see below), whose sum is σ = 34091008. Its totient is φ = 21555072.

The previous prime is 27470969. The next prime is 27471019. The reversal of 27470989 is 98907472.

It is not a de Polignac number, because 27470989 - 2¹¹ = 27468941 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27470969) 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, 10369 + ... + 12745.

It is an arithmetic number, because the mean of its divisors is an integer number (2130688).

Almost surely, 2^27470989 is an apocalyptic number.

It is an amenable number.

27470989 is a deficient number, since it is larger than the sum of its proper divisors (6620019).

27470989 is a wasteful number, since it uses less digits than its factorization.

27470989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 27470989 is about 5241.2774206294. The cubic root of 27470989 is about 301.7343577260.

The spelling of 27470989 in words is "twenty-seven million, four hundred seventy thousand, nine hundred eighty-nine".