1407303997 has 4 divisors (see below), whose sum is σ = 1535240736. Its totient is φ = 1279367260.

The previous prime is 1407303983. The next prime is 1407304007. The reversal of 1407303997 is 7993037041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7993037041 = 11 ⋅726639731.

It is a cyclic number.

It is not a de Polignac number, because 1407303997 - 2¹⁹ = 1406779709 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 (1407303797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63968353 + ... + 63968374.

It is an arithmetic number, because the mean of its divisors is an integer number (383810184).

Almost surely, 2^1407303997 is an apocalyptic number.

It is an amenable number.

1407303997 is a deficient number, since it is larger than the sum of its proper divisors (127936739).

1407303997 is a wasteful number, since it uses less digits than its factorization.

1407303997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127936738.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 1407303997 is about 37514.0506610523. The cubic root of 1407303997 is about 1120.6310211623.

The spelling of 1407303997 in words is "one billion, four hundred seven million, three hundred three thousand, nine hundred ninety-seven".