1403887397 has 8 divisors (see below), whose sum is σ = 1534129632. Its totient is φ = 1274081200.

The previous prime is 1403887379. The next prime is 1403887399. The reversal of 1403887397 is 7937883041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1403887397 - 2¹⁸ = 1403625253 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 (1403887399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102254 + ... + 115167.

It is an arithmetic number, because the mean of its divisors is an integer number (191766204).

Almost surely, 2^1403887397 is an apocalyptic number.

It is an amenable number.

1403887397 is a deficient number, since it is larger than the sum of its proper divisors (130242235).

1403887397 is a wasteful number, since it uses less digits than its factorization.

1403887397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218019.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 1403887397 is about 37468.4853843867. The cubic root of 1403887397 is about 1119.7234109205.

The spelling of 1403887397 in words is "one billion, four hundred three million, eight hundred eighty-seven thousand, three hundred ninety-seven".