88691402 has 4 divisors (see below), whose sum is σ = 133037106. Its totient is φ = 44345700.

The previous prime is 88691401. The next prime is 88691417. The reversal of 88691402 is 20419688.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49014001 + 39677401 = 7001^2 + 6299^2 .

It is not an unprimeable number, because it can be changed into a prime (88691401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22172849 + ... + 22172852.

Almost surely, 2^88691402 is an apocalyptic number.

88691402 is a deficient number, since it is larger than the sum of its proper divisors (44345704).

88691402 is a wasteful number, since it uses less digits than its factorization.

88691402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44345703.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 88691402 is about 9417.6112682569. The cubic root of 88691402 is about 445.9578777408.

The spelling of 88691402 in words is "eighty-eight million, six hundred ninety-one thousand, four hundred two".