1977413 has 4 divisors (see below), whose sum is σ = 1988640. Its totient is φ = 1966188.

The previous prime is 1977407. The next prime is 1977427. The reversal of 1977413 is 3147791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3147791 = 251 ⋅12541.

It is a cyclic number.

It is not a de Polignac number, because 1977413 - 2¹² = 1973317 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 1977413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977403) 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, 5345 + ... + 5702.

It is an arithmetic number, because the mean of its divisors is an integer number (497160).

2^1977413 is an apocalyptic number.

It is an amenable number.

1977413 is a deficient number, since it is larger than the sum of its proper divisors (11227).

1977413 is a wasteful number, since it uses less digits than its factorization.

1977413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226.

The product of its digits is 5292, while the sum is 32.

The square root of 1977413 is about 1406.2051770634. The cubic root of 1977413 is about 125.5160109306.

The spelling of 1977413 in words is "one million, nine hundred seventy-seven thousand, four hundred thirteen".