97391642 has 8 divisors (see below), whose sum is σ = 146211156. Its totient is φ = 48654592.

The previous prime is 97391627. The next prime is 97391647. The reversal of 97391642 is 24619379.

It can be written as a sum of positive squares in 2 ways, for example, as 96020401 + 1371241 = 9799^2 + 1171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 97391642.

It is not an unprimeable number, because it can be changed into a prime (97391647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17573 + ... + 22440.

Almost surely, 2^97391642 is an apocalyptic number.

97391642 is a deficient number, since it is larger than the sum of its proper divisors (48819514).

97391642 is a wasteful number, since it uses less digits than its factorization.

97391642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41232.

The product of its digits is 81648, while the sum is 41.

The square root of 97391642 is about 9868.7203831095. The cubic root of 97391642 is about 460.0876361071.

The spelling of 97391642 in words is "ninety-seven million, three hundred ninety-one thousand, six hundred forty-two".