149407994 has 4 divisors (see below), whose sum is σ = 224111994. Its totient is φ = 74703996.

The previous prime is 149407967. The next prime is 149408027. The reversal of 149407994 is 499704941.

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., 144841225 + 4566769 = 12035^2 + 2137^2 .

It is a super-2 number, since 2×149407994² = 44645497342208072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37351997 + ... + 37352000.

Almost surely, 2^149407994 is an apocalyptic number.

149407994 is a deficient number, since it is larger than the sum of its proper divisors (74704000).

149407994 is an equidigital number, since it uses as much as digits as its factorization.

149407994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74703999.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 149407994 is about 12223.2562764592. The cubic root of 149407994 is about 530.6293627101.

The spelling of 149407994 in words is "one hundred forty-nine million, four hundred seven thousand, nine hundred ninety-four".