7423400985 has 128 divisors (see below), whose sum is σ = 16787312640. Its totient is φ = 2697753600.

The previous prime is 7423400969. The next prime is 7423401043. The reversal of 7423400985 is 5890043247.

It is not a de Polignac number, because 7423400985 - 2⁴ = 7423400969 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 272275 + ... + 298295.

It is an arithmetic number, because the mean of its divisors is an integer number (131150880).

Almost surely, 2^7423400985 is an apocalyptic number.

It is an amenable number.

7423400985 is an abundant number, since it is smaller than the sum of its proper divisors (9363911655).

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

7423400985 is a wasteful number, since it uses less digits than its factorization.

7423400985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26079.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 7423400985 is about 86159.1607723752. The cubic root of 7423400985 is about 1950.7471154259.

The spelling of 7423400985 in words is "seven billion, four hundred twenty-three million, four hundred thousand, nine hundred eighty-five".