1447540997 has 12 divisors (see below), whose sum is σ = 1693617516. Its totient is φ = 1233570240.

The previous prime is 1447540993. The next prime is 1447541027. The reversal of 1447540997 is 7990457441.

It can be written as a sum of positive squares in 2 ways, for example, as 1051769761 + 395771236 = 32431^2 + 19894^2 .

It is not a de Polignac number, because 1447540997 - 2² = 1447540993 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 (1447540993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76904 + ... + 93857.

It is an arithmetic number, because the mean of its divisors is an integer number (141134793).

Almost surely, 2^1447540997 is an apocalyptic number.

It is an amenable number.

1447540997 is a deficient number, since it is larger than the sum of its proper divisors (246076519).

1447540997 is a wasteful number, since it uses less digits than its factorization.

1447540997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170948 (or 170941 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1447540997 is about 38046.5635373288. The cubic root of 1447540997 is about 1131.2110119872.

The spelling of 1447540997 in words is "one billion, four hundred forty-seven million, five hundred forty thousand, nine hundred ninety-seven".