1402172917 has 4 divisors (see below), whose sum is σ = 1405503916. Its totient is φ = 1398841920.

The previous prime is 1402172879. The next prime is 1402172951. The reversal of 1402172917 is 7192712041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138086001 + 1264086916 = 11751^2 + 35554^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402172917 - 2⁷ = 1402172789 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 (1402172117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664868 + ... + 1665709.

It is an arithmetic number, because the mean of its divisors is an integer number (351375979).

Almost surely, 2^1402172917 is an apocalyptic number.

It is an amenable number.

1402172917 is a deficient number, since it is larger than the sum of its proper divisors (3330999).

1402172917 is an equidigital number, since it uses as much as digits as its factorization.

1402172917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330998.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1402172917 is about 37445.5994343795. The cubic root of 1402172917 is about 1119.2674091510.

Adding to 1402172917 its reverse (7192712041), we get a palindrome (8594884958).

The spelling of 1402172917 in words is "one billion, four hundred two million, one hundred seventy-two thousand, nine hundred seventeen".