1979029994394 has 32 divisors (see below), whose sum is σ = 4288349545920. Its totient is φ = 606433266432.

The previous prime is 1979029994363. The next prime is 1979029994419. The reversal of 1979029994394 is 4934999209791.

It is a super-2 number, since 2×1979029994394² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225603229 + ... + 225612000.

It is an arithmetic number, because the mean of its divisors is an integer number (134010923310).

Almost surely, 2^{1979029994394} is an apocalyptic number.

1979029994394 is an abundant number, since it is smaller than the sum of its proper divisors (2309319551526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1979029994394 is a wasteful number, since it uses less digits than its factorization.

1979029994394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451215294.

The product of its (nonzero) digits is 357128352, while the sum is 75.

The spelling of 1979029994394 in words is "one trillion, nine hundred seventy-nine billion, twenty-nine million, nine hundred ninety-four thousand, three hundred ninety-four".