7957349477 has 32 divisors (see below), whose sum is σ = 10748795904. Its totient is φ = 5700038400.

The previous prime is 7957349471. The next prime is 7957349501. The reversal of 7957349477 is 7749437597.

7957349477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7957349477 - 2¹⁰ = 7957348453 is a prime.

It is a super-2 number, since 2×7957349477² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7957349471) 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, 14399 + ... + 126972.

It is an arithmetic number, because the mean of its divisors is an integer number (335899872).

Almost surely, 2^7957349477 is an apocalyptic number.

7957349477 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

7957349477 is a deficient number, since it is larger than the sum of its proper divisors (2791446427).

7957349477 is a wasteful number, since it uses less digits than its factorization.

7957349477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141449.

The product of its digits is 46675440, while the sum is 62.

The square root of 7957349477 is about 89203.9768003647. The cubic root of 7957349477 is about 1996.4394547704.

The spelling of 7957349477 in words is "seven billion, nine hundred fifty-seven million, three hundred forty-nine thousand, four hundred seventy-seven".