1972487 has 4 divisors (see below), whose sum is σ = 2151816. Its totient is φ = 1793160.

The previous prime is 1972483. The next prime is 1972511. The reversal of 1972487 is 7842791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7842791 = 11 ⋅712981.

It is a cyclic number.

It is not a de Polignac number, because 1972487 - 2² = 1972483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1972487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972483) 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, 89648 + ... + 89669.

It is an arithmetic number, because the mean of its divisors is an integer number (537954).

2^1972487 is an apocalyptic number.

1972487 is a deficient number, since it is larger than the sum of its proper divisors (179329).

1972487 is a wasteful number, since it uses less digits than its factorization.

1972487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179328.

The product of its digits is 28224, while the sum is 38.

The square root of 1972487 is about 1404.4525623886. The cubic root of 1972487 is about 125.4116985458.

The spelling of 1972487 in words is "one million, nine hundred seventy-two thousand, four hundred eighty-seven".