4297978 has 4 divisors (see below), whose sum is σ = 6446970. Its totient is φ = 2148988.

The previous prime is 4297963. The next prime is 4297981. The reversal of 4297978 is 8797924.

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., 3775249 + 522729 = 1943^2 + 723^2 .

It is a super-2 number, since 2×4297978² = 36945229776968, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074493 + ... + 1074496.

Almost surely, 2^4297978 is an apocalyptic number.

4297978 is a deficient number, since it is larger than the sum of its proper divisors (2148992).

4297978 is a wasteful number, since it uses less digits than its factorization.

4297978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148991.

The product of its digits is 254016, while the sum is 46.

The square root of 4297978 is about 2073.1565305109. The cubic root of 4297978 is about 162.5878404771.

The spelling of 4297978 in words is "four million, two hundred ninety-seven thousand, nine hundred seventy-eight".