1979554 has 4 divisors (see below), whose sum is σ = 2969334. Its totient is φ = 989776.

The previous prime is 1979543. The next prime is 1979563. The reversal of 1979554 is 4559791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1651225 + 328329 = 1285^2 + 573^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494887 + ... + 494890.

2^1979554 is an apocalyptic number.

1979554 is a deficient number, since it is larger than the sum of its proper divisors (989780).

1979554 is an equidigital number, since it uses as much as digits as its factorization.

1979554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989779.

The product of its digits is 56700, while the sum is 40.

The square root of 1979554 is about 1406.9662398224. The cubic root of 1979554 is about 125.5612944822.

The spelling of 1979554 in words is "one million, nine hundred seventy-nine thousand, five hundred fifty-four".