1972399415 has 64 divisors (see below), whose sum is σ = 2947166208. Its totient is φ = 1236480000.

The previous prime is 1972399411. The next prime is 1972399447. The reversal of 1972399415 is 5149932791.

It is not a de Polignac number, because 1972399415 - 2² = 1972399411 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972399411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7019075 + ... + 7019355.

It is an arithmetic number, because the mean of its divisors is an integer number (46049472).

Almost surely, 2^1972399415 is an apocalyptic number.

1972399415 is a deficient number, since it is larger than the sum of its proper divisors (974766793).

1972399415 is a wasteful number, since it uses less digits than its factorization.

1972399415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its digits is 612360, while the sum is 50.

The square root of 1972399415 is about 44411.7035813759. The cubic root of 1972399415 is about 1254.0984228579.

The spelling of 1972399415 in words is "one billion, nine hundred seventy-two million, three hundred ninety-nine thousand, four hundred fifteen".