972415 has 4 divisors (see below), whose sum is σ = 1166904. Its totient is φ = 777928.

The previous prime is 972409. The next prime is 972427. The reversal of 972415 is 514279.

972415 = 439² + 440² + ... + 443².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514279 = 103 ⋅4993.

It is a cyclic number.

It is not a de Polignac number, because 972415 - 2³ = 972407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97237 + ... + 97246.

It is an arithmetic number, because the mean of its divisors is an integer number (291726).

972415 is a Friedman number, since it can be written as (21^4+9-7)*5, using all its digits and the basic arithmetic operations.

2⁹⁷²⁴¹⁵ is an apocalyptic number.

972415 is a deficient number, since it is larger than the sum of its proper divisors (194489).

972415 is a wasteful number, since it uses less digits than its factorization.

972415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194488.

The product of its digits is 2520, while the sum is 28.

The square root of 972415 is about 986.1110485133. Note that the first 3 decimals coincide. The cubic root of 972415 is about 99.0719131956.

The spelling of 972415 in words is "nine hundred seventy-two thousand, four hundred fifteen".