1039978572 has 12 divisors (see below), whose sum is σ = 2426616696. Its totient is φ = 346659520.

The previous prime is 1039978559. The next prime is 1039978579. The reversal of 1039978572 is 2758799301.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1039978579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43332429 + ... + 43332452.

It is an arithmetic number, because the mean of its divisors is an integer number (202218058).

Almost surely, 2^1039978572 is an apocalyptic number.

1039978572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1039978572 is an abundant number, since it is smaller than the sum of its proper divisors (1386638124).

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

1039978572 is a wasteful number, since it uses less digits than its factorization.

1039978572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86664888 (or 86664886 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 1039978572 is about 32248.6987644463. The cubic root of 1039978572 is about 1013.1524454456.

The spelling of 1039978572 in words is "one billion, thirty-nine million, nine hundred seventy-eight thousand, five hundred seventy-two".