1434391870921 has 9 divisors (see below), whose sum is σ = 1439392664749. Its totient is φ = 1429408403500.

The previous prime is 1434391870889. The next prime is 1434391870927. The reversal of 1434391870921 is 1290781934341.

The square root of 1434391870921 is 1197661.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1434391870921 - 2⁵ = 1434391870889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1434391870927) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 372470646 + ... + 372474496.

Almost surely, 2^{1434391870921} is an apocalyptic number.

1434391870921 is the 1197661-st square number.

1434391870921 is the 598831-st centered octagonal number.

It is an amenable number.

1434391870921 is a deficient number, since it is larger than the sum of its proper divisors (5000793828).

1434391870921 is an frugal number, since it uses more digits than its factorization.

1434391870921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8324 (or 4162 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 1434391870921 in words is "one trillion, four hundred thirty-four billion, three hundred ninety-one million, eight hundred seventy thousand, nine hundred twenty-one".