7400889139 has 32 divisors (see below), whose sum is σ = 9140480000. Its totient is φ = 5851782144.

The previous prime is 7400889127. The next prime is 7400889149. The reversal of 7400889139 is 9319880047.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7400889139 - 2⁷ = 7400889011 is a prime.

It is a super-2 number, since 2×7400889139² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7400889092 and 7400889101.

It is not an unprimeable number, because it can be changed into a prime (7400889109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 762187 + ... + 771835.

It is an arithmetic number, because the mean of its divisors is an integer number (285640000).

Almost surely, 2^7400889139 is an apocalyptic number.

7400889139 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

7400889139 is a deficient number, since it is larger than the sum of its proper divisors (1739590861).

7400889139 is a wasteful number, since it uses less digits than its factorization.

7400889139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9827.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 7400889139 is about 86028.4205306595. The cubic root of 7400889139 is about 1948.7732050357.

The spelling of 7400889139 in words is "seven billion, four hundred million, eight hundred eighty-nine thousand, one hundred thirty-nine".