9147997400 has 24 divisors (see below), whose sum is σ = 21269094420. Its totient is φ = 3659198880.

The previous prime is 9147997399. The next prime is 9147997403. The reversal of 9147997400 is 47997419.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9147997403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22869794 + ... + 22870193.

Almost surely, 2^9147997400 is an apocalyptic number.

It is an amenable number.

9147997400 is an abundant number, since it is smaller than the sum of its proper divisors (12121097020).

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

9147997400 is a wasteful number, since it uses less digits than its factorization.

9147997400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45740003 (or 45739994 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 9147997400 is about 95645.1640178425. The cubic root of 9147997400 is about 2091.4236311398.

The spelling of 9147997400 in words is "nine billion, one hundred forty-seven million, nine hundred ninety-seven thousand, four hundred".