7423997490 has 672 divisors, whose sum is σ = 26864925696. Its totient is φ = 1436071680.

The previous prime is 7423997479. The next prime is 7423997491. The reversal of 7423997490 is 947993247.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (7423997491) by changing a digit.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 239483775 + ... + 239483805.

It is an arithmetic number, because the mean of its divisors is an integer number (39977568).

Almost surely, 2^7423997490 is an apocalyptic number.

7423997490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7423997490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13432462848).

7423997490 is an abundant number, since it is smaller than the sum of its proper divisors (19440928206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7423997490 is a wasteful number, since it uses less digits than its factorization.

7423997490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 54.

The square root of 7423997490 is about 86162.6223486727. The cubic root of 7423997490 is about 1950.7993645790.

The spelling of 7423997490 in words is "seven billion, four hundred twenty-three million, nine hundred ninety-seven thousand, four hundred ninety".