970451639 has 4 divisors (see below), whose sum is σ = 981355680. Its totient is φ = 959547600.

The previous prime is 970451617. The next prime is 970451641. The reversal of 970451639 is 936154079.

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 970451639 - 2²⁰ = 969403063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 970451639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (970451609) 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, 5451887 + ... + 5452064.

It is an arithmetic number, because the mean of its divisors is an integer number (245338920).

Almost surely, 2^970451639 is an apocalyptic number.

970451639 is a deficient number, since it is larger than the sum of its proper divisors (10904041).

970451639 is a wasteful number, since it uses less digits than its factorization.

970451639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10904040.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 970451639 is about 31152.0727881790. The cubic root of 970451639 is about 990.0519100081.

The spelling of 970451639 in words is "nine hundred seventy million, four hundred fifty-one thousand, six hundred thirty-nine".