1021979352 has 16 divisors (see below), whose sum is σ = 2554948440. Its totient is φ = 340659776.

The previous prime is 1021979351. The next prime is 1021979369. The reversal of 1021979352 is 2539791201.

It is a self number, because there is not a number n which added to its sum of digits gives 1021979352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021979351) 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, 21291213 + ... + 21291260.

Almost surely, 2^1021979352 is an apocalyptic number.

1021979352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021979352 is an abundant number, since it is smaller than the sum of its proper divisors (1532969088).

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

1021979352 is a wasteful number, since it uses less digits than its factorization.

1021979352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42582482 (or 42582478 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1021979352 is about 31968.4117841347. The cubic root of 1021979352 is about 1007.2734197705.

The spelling of 1021979352 in words is "one billion, twenty-one million, nine hundred seventy-nine thousand, three hundred fifty-two".