1447640734 has 16 divisors (see below), whose sum is σ = 2247484320. Its totient is φ = 698504800.

The previous prime is 1447640731. The next prime is 1447640737. The reversal of 1447640734 is 4370467441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1447640731) and next prime (1447640737).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447640731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135384 + ... + 145684.

It is an arithmetic number, because the mean of its divisors is an integer number (140467770).

Almost surely, 2^1447640734 is an apocalyptic number.

1447640734 is a deficient number, since it is larger than the sum of its proper divisors (799843586).

1447640734 is a wasteful number, since it uses less digits than its factorization.

1447640734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12755.

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 1447640734 is about 38047.8742375970. The cubic root of 1447640734 is about 1131.2369919081.

The spelling of 1447640734 in words is "one billion, four hundred forty-seven million, six hundred forty thousand, seven hundred thirty-four".