1029949887 has 4 divisors (see below), whose sum is σ = 1373266520. Its totient is φ = 686633256.

The previous prime is 1029949883. The next prime is 1029949909. The reversal of 1029949887 is 7889499201.

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

It is not a de Polignac number, because 1029949887 - 2² = 1029949883 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 (1029949883) 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, 171658312 + ... + 171658317.

It is an arithmetic number, because the mean of its divisors is an integer number (343316630).

Almost surely, 2^1029949887 is an apocalyptic number.

1029949887 is a deficient number, since it is larger than the sum of its proper divisors (343316633).

1029949887 is an equidigital number, since it uses as much as digits as its factorization.

1029949887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343316632.

The product of its (nonzero) digits is 2612736, while the sum is 57.

The square root of 1029949887 is about 32092.8323305999. The cubic root of 1029949887 is about 1009.8852554023.

The spelling of 1029949887 in words is "one billion, twenty-nine million, nine hundred forty-nine thousand, eight hundred eighty-seven".