970391087 has 4 divisors (see below), whose sum is σ = 971317200. Its totient is φ = 969464976.

The previous prime is 970391039. The next prime is 970391101. The reversal of 970391087 is 780193079.

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 970391087 - 2¹⁴ = 970374703 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 (970391017) 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, 461483 + ... + 463580.

It is an arithmetic number, because the mean of its divisors is an integer number (242829300).

Almost surely, 2^970391087 is an apocalyptic number.

970391087 is a deficient number, since it is larger than the sum of its proper divisors (926113).

970391087 is a wasteful number, since it uses less digits than its factorization.

970391087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926112.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 970391087 is about 31151.1008954740. The cubic root of 970391087 is about 990.0313179223.

The spelling of 970391087 in words is "nine hundred seventy million, three hundred ninety-one thousand, eighty-seven".