1047615997 has 4 divisors (see below), whose sum is σ = 1047693340. Its totient is φ = 1047538656.

The previous prime is 1047615971. The next prime is 1047616001. The reversal of 1047615997 is 7995167401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7995167401 = 13 ⋅615012877.

It can be written as a sum of positive squares in 2 ways, for example, as 443144601 + 604471396 = 21051^2 + 24586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047615997 - 2⁷ = 1047615869 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 1047615997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047615697) 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, 12408 + ... + 47425.

It is an arithmetic number, because the mean of its divisors is an integer number (261923335).

Almost surely, 2^1047615997 is an apocalyptic number.

It is an amenable number.

1047615997 is a deficient number, since it is larger than the sum of its proper divisors (77343).

1047615997 is an equidigital number, since it uses as much as digits as its factorization.

1047615997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77342.

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 1047615997 is about 32366.8966229387. The cubic root of 1047615997 is about 1015.6265383576.

The spelling of 1047615997 in words is "one billion, forty-seven million, six hundred fifteen thousand, nine hundred ninety-seven".