374489721 has 6 divisors (see below), whose sum is σ = 540929610. Its totient is φ = 249659808.

The previous prime is 374489707. The next prime is 374489737. The reversal of 374489721 is 127984473.

It can be written as a sum of positive squares in only one way, i.e., 217238121 + 157251600 = 14739^2 + 12540^2 .

It is not a de Polignac number, because 374489721 - 2¹⁸ = 374227577 is a prime.

It is a super-2 number, since 2×374489721² = 280485102269315682, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (374489761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20804976 + ... + 20804993.

It is an arithmetic number, because the mean of its divisors is an integer number (90154935).

Almost surely, 2^374489721 is an apocalyptic number.

It is an amenable number.

374489721 is a deficient number, since it is larger than the sum of its proper divisors (166439889).

374489721 is a wasteful number, since it uses less digits than its factorization.

374489721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41609975 (or 41609972 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 374489721 is about 19351.7368987902. The cubic root of 374489721 is about 720.7975479385.

The spelling of 374489721 in words is "three hundred seventy-four million, four hundred eighty-nine thousand, seven hundred twenty-one".