39970485077 has 4 divisors (see below), whose sum is σ = 40366232556. Its totient is φ = 39574737600.

The previous prime is 39970485073. The next prime is 39970485127. The reversal of 39970485077 is 77058407993.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38077277956 + 1893207121 = 195134^2 + 43511^2 .

It is a cyclic number.

It is not a de Polignac number, because 39970485077 - 2² = 39970485073 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 (39970485073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197873588 + ... + 197873789.

It is an arithmetic number, because the mean of its divisors is an integer number (10091558139).

Almost surely, 2^39970485077 is an apocalyptic number.

It is an amenable number.

39970485077 is a deficient number, since it is larger than the sum of its proper divisors (395747479).

39970485077 is a wasteful number, since it uses less digits than its factorization.

39970485077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395747478.

The product of its (nonzero) digits is 13335840, while the sum is 59.

The spelling of 39970485077 in words is "thirty-nine billion, nine hundred seventy million, four hundred eighty-five thousand, seventy-seven".