1029038440 has 16 divisors (see below), whose sum is σ = 2315336580. Its totient is φ = 411615360.

The previous prime is 1029038431. The next prime is 1029038453. The reversal of 1029038440 is 448309201.

It can be written as a sum of positive squares in 2 ways, for example, as 1026433444 + 2604996 = 32038^2 + 1614^2 .

It is a super-2 number, since 2×1029038440² = 2117840221995267200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12862941 + ... + 12863020.

Almost surely, 2^1029038440 is an apocalyptic number.

1029038440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1029038440 is an abundant number, since it is smaller than the sum of its proper divisors (1286298140).

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

1029038440 is a wasteful number, since it uses less digits than its factorization.

1029038440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25725972 (or 25725968 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1029038440 is about 32078.6290230739. The cubic root of 1029038440 is about 1009.5872705039.

The spelling of 1029038440 in words is "one billion, twenty-nine million, thirty-eight thousand, four hundred forty".