1449521997 has 32 divisors (see below), whose sum is σ = 2411602944. Its totient is φ = 752371200.

The previous prime is 1449521977. The next prime is 1449522007. The reversal of 1449521997 is 7991259441.

It is not a de Polignac number, because 1449521997 - 2⁸ = 1449521741 is a prime.

It is a super-2 number, since 2×1449521997² = 4202228039573736018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1449521947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429597 + ... + 432957.

It is an arithmetic number, because the mean of its divisors is an integer number (75362592).

Almost surely, 2^1449521997 is an apocalyptic number.

It is an amenable number.

1449521997 is a deficient number, since it is larger than the sum of its proper divisors (962080947).

1449521997 is a wasteful number, since it uses less digits than its factorization.

1449521997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5249.

The product of its digits is 816480, while the sum is 51.

The square root of 1449521997 is about 38072.5885250793. The cubic root of 1449521997 is about 1131.7268079792.

The spelling of 1449521997 in words is "one billion, four hundred forty-nine million, five hundred twenty-one thousand, nine hundred ninety-seven".