1403997407 has 8 divisors (see below), whose sum is σ = 1409043600. Its totient is φ = 1398960640.

The previous prime is 1403997391. The next prime is 1403997433. The reversal of 1403997407 is 7047993041.

It is a happy number.

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 1403997407 - 2⁴ = 1403997391 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 (1403997307) 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, 420848 + ... + 424170.

It is an arithmetic number, because the mean of its divisors is an integer number (176130450).

Almost surely, 2^1403997407 is an apocalyptic number.

1403997407 is a deficient number, since it is larger than the sum of its proper divisors (5046193).

1403997407 is an equidigital number, since it uses as much as digits as its factorization.

1403997407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 1403997407 is about 37469.9533893492. The cubic root of 1403997407 is about 1119.7526576999.

The spelling of 1403997407 in words is "one billion, four hundred three million, nine hundred ninety-seven thousand, four hundred seven".