1403397897 has 16 divisors (see below), whose sum is σ = 2091096000. Its totient is φ = 829798400.

The previous prime is 1403397883. The next prime is 1403397913. The reversal of 1403397897 is 7987933041.

It is a cyclic number.

It is not a de Polignac number, because 1403397897 - 2⁴ = 1403397881 is a prime.

It is a super-3 number, since 3×1403397897³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1403397847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517272 + ... + 519977.

It is an arithmetic number, because the mean of its divisors is an integer number (130693500).

Almost surely, 2^1403397897 is an apocalyptic number.

It is an amenable number.

1403397897 is a deficient number, since it is larger than the sum of its proper divisors (687698103).

1403397897 is a wasteful number, since it uses less digits than its factorization.

1403397897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037304.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 1403397897 is about 37461.9526586642. The cubic root of 1403397897 is about 1119.5932560552.

The spelling of 1403397897 in words is "one billion, four hundred three million, three hundred ninety-seven thousand, eight hundred ninety-seven".