1029869421 has 8 divisors (see below), whose sum is σ = 1569324864. Its totient is φ = 588496800.

The previous prime is 1029869419. The next prime is 1029869441. The reversal of 1029869421 is 1249689201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1029869421 - 2¹ = 1029869419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029869441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24520680 + ... + 24520721.

It is an arithmetic number, because the mean of its divisors is an integer number (196165608).

Almost surely, 2^1029869421 is an apocalyptic number.

It is an amenable number.

1029869421 is a deficient number, since it is larger than the sum of its proper divisors (539455443).

1029869421 is an equidigital number, since it uses as much as digits as its factorization.

1029869421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49041411.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1029869421 is about 32091.5786616988. The cubic root of 1029869421 is about 1009.8589552414.

The spelling of 1029869421 in words is "one billion, twenty-nine million, eight hundred sixty-nine thousand, four hundred twenty-one".