7974490 has 36 divisors (see below), whose sum is σ = 15478506. Its totient is φ = 2957616.

The previous prime is 7974481. The next prime is 7974493. The reversal of 7974490 is 944797.

It can be written as a sum of positive squares in only one way, i.e., 7177041 + 797449 = 2679^2 + 893^2 .

It is not an unprimeable number, because it can be changed into a prime (7974493) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 169647 + ... + 169693.

Almost surely, 2^7974490 is an apocalyptic number.

7974490 is a deficient number, since it is larger than the sum of its proper divisors (7504016).

7974490 is a wasteful number, since it uses less digits than its factorization.

7974490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 7974490 is about 2823.9139505304. The cubic root of 7974490 is about 199.7871903072.

Multiplying 7974490 by its sum of digits (40), we get a square (318979600 = 17860²).

It can be divided in two parts, 7974 and 490, that added together give a square (8464 = 92²).

The spelling of 7974490 in words is "seven million, nine hundred seventy-four thousand, four hundred ninety".