1972399414 has 4 divisors (see below), whose sum is σ = 2958599124. Its totient is φ = 986199706.

The previous prime is 1972399411. The next prime is 1972399447. The reversal of 1972399414 is 4149932791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4149932791 = 1511 ⋅2746481.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 493099852 + ... + 493099855.

It is an arithmetic number, because the mean of its divisors is an integer number (739649781).

Almost surely, 2^1972399414 is an apocalyptic number.

1972399414 is a deficient number, since it is larger than the sum of its proper divisors (986199710).

1972399414 is an equidigital number, since it uses as much as digits as its factorization.

1972399414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986199709.

The product of its digits is 489888, while the sum is 49.

The square root of 1972399414 is about 44411.7035701176. The cubic root of 1972399414 is about 1254.0984226459.

The spelling of 1972399414 in words is "one billion, nine hundred seventy-two million, three hundred ninety-nine thousand, four hundred fourteen".