83926381947 has 32 divisors (see below), whose sum is σ = 116273034240. Its totient is φ = 53808606720.

The previous prime is 83926381927. The next prime is 83926381969. The reversal of 83926381947 is 74918362938.

It is not a de Polignac number, because 83926381947 - 2⁶ = 83926381883 is a prime.

It is a super-4 number, since 4×83926381947⁴ (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (83926381927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9654579 + ... + 9663267.

It is an arithmetic number, because the mean of its divisors is an integer number (3633532320).

Almost surely, 2^83926381947 is an apocalyptic number.

83926381947 is a deficient number, since it is larger than the sum of its proper divisors (32346652293).

83926381947 is a wasteful number, since it uses less digits than its factorization.

83926381947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923.

The product of its digits is 15676416, while the sum is 60.

The spelling of 83926381947 in words is "eighty-three billion, nine hundred twenty-six million, three hundred eighty-one thousand, nine hundred forty-seven".